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Fencer Vulns
high 8.1

CVE-2026-18147 json

Freeipa: ipa: freeipa/idm: cross-site scripting vulnerability allows arbitrary code execution via crafted url

published 2026-09-09 1 mo ago modified 2026-11-04 4 d ago also EUVD-2026-75108

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

A flaw was found in FreeIPA. An unauthenticated remote attacker could exploit a DOM Cross-Site Scripting (XSS) vulnerability in the FreeIPA/IdM Web UI password reset page. By enticing a victim to click a specially crafted link and complete a password reset, the attacker could inject and execute arbitrary JavaScript code. This allows the attacker to perform actions within the victim's authenticated session, potentially leading to full administrative control if an IdM administrator is targeted.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:4.13.4-1.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.12.2-15.el10_0.7
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:4.6.8-5.el7_9.25
  • Red Hat Red Hat Enterprise Linux 8 8100020261007070536.823393f5, 8100020261007071200.143e9e98
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020261027121250.f153676a, 8040020261027121355.5b01ab7e
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 8040020261027121250.f153676a, 8040020261027121355.5b01ab7e
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 8060020261008133528.ada582f1, 8060020261008134123.c1533a64
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 8060020261008133528.ada582f1, 8060020261008134123.c1533a64
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 8080020261007071832.b0a6ceea, 8080020261007080925.e581a9e4
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 8080020261007071832.b0a6ceea, 8080020261007080925.e581a9e4
  • Red Hat Red Hat Enterprise Linux 9 0:4.13.4-1.el9_8
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:4.10.1-12.el9_2.7
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:4.11.0-15.el9_4.9
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:4.12.2-14.el9_6.8
  • ipa RHEL 8 4.9.13-21.module+el8.10.0+25042+a3bddcd5.3
  • pyusb RHEL 8 1.0.0-9.1.module+el8.9.0+18920+2223d05e
  • softhsm RHEL 8 2.6.0-5.module+el8.9.0+18911+94941f82
  • custodia RHEL 8 0.6.0-3.module+el8.9.0+18911+94941f82
  • slapi-nis RHEL 8 0.60.0-4.module+el8.10.0+20723+03062ebd
  • ipa-client RHEL 8 4.9.13-21.module+el8.10.0+25042+a3bddcd5.3
  • ipa-common RHEL 8 4.9.13-21.module+el8.10.0+25042+a3bddcd5.3
  • ipa-server RHEL 8 4.9.13-21.module+el8.10.0+25041+701625f4.3

red hat advisories RHSA-2026:83460RHSA-2026:83461RHSA-2026:83085RHSA-2026:83083RHSA-2026:83084RHSA-2026:82935

  • softhsm AlmaLinux 8 2.6.0-5.module_el8.6.0+2881+2f24dc92
  • softhsm AlmaLinux 8 2.6.0-5.module_el8.6.0+3031+2f24dc92
  • custodia AlmaLinux 8 0.6.0-3.module_el8.6.0+2881+2f24dc92
  • slapi-nis AlmaLinux 8 0.60.0-4.module_el8.10.0+3844+20e075e5.alma.1
  • ipa-client AlmaLinux 8 4.9.13-21.module_el8.10.0+4302+2d2000af.3
  • ipa-common AlmaLinux 8 4.9.13-21.module_el8.10.0+4302+2d2000af.3
  • ipa-server AlmaLinux 8 4.9.13-21.module_el8.10.0+4302+2d2000af.3
  • opendnssec AlmaLinux 8 2.1.7-2.module_el8.10.0+3980+d78e8e90

almalinux advisories ALSA-2026:83460ALSA-2026:72279ALSA-2026:70564

  • ipa Rocky Linux 8 4.9.13-21.module+el8.10.0+40089+03bf3c1f
  • ipa Rocky Linux 8 4.9.13-21.module+el8.10.0+40090+e6f37a74
  • pyusb Rocky Linux 8 1.0.0-9.1.module+el8.9.0+1372+09f67869
  • pyusb Rocky Linux 8 1.0.0-9.1.module+el8.9.0+1371+ffa84eb9
  • softhsm Rocky Linux 8 2.6.0-5.module+el8.9.0+1371+ffa84eb9
  • custodia Rocky Linux 8 0.6.0-3.module+el8.9.0+1371+ffa84eb9
  • slapi-nis Rocky Linux 8 0.60.0-4.module+el8.9.0+1573+39ab85f4
  • opendnssec Rocky Linux 8 2.1.7-2.module+el8.10.0+1960+1ed527b3

rocky linux advisories RLSA-2026:83460RLSA-2026:72279RLSA-2026:70564

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-18147 updated cvss 8.1

freeipa: ipa: FreeIPA/IdM: Cross-Site Scripting vulnerability allows arbitrary code execution via crafted URL

  • Red Hat Enterprise Linux 6 ipa, ipa-client, ipa-python, ipa-server, ipa-admintools, ipa-server-selinux, +1 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder EUS (v.9.6) python3-ipatests 4.12.2-14.el9_6.8
    fixed: vendor fix RHSA-2026:83083
  • Red Hat Enterprise Linux AppStream (v. 8) pyusb 1.0.0-9.1.module+el8.9.0+18911+94941f82, pyusb 1.0.0-9.1.module+el8.9.0+18920+2223d05e, softhsm 2.6.0-5.module+el8.9.0+18911+94941f82, custodia 0.6.0-3.module+el8.9.0+18911+94941f82, ipa 4.9.13-21.module+el8.10.0+25041+701625f4.3, ipa 4.9.13-21.module+el8.10.0+25042+a3bddcd5.3, +50 more
    fixed: vendor fix RHSA-2026:83460
  • Red Hat Enterprise Linux AppStream (v. 9) ipa 4.13.4-1.el9_8, ipa-client 4.13.4-1.el9_8, ipa-common 4.13.4-1.el9_8, ipa-server 4.13.4-1.el9_8, ipa-selinux 4.13.4-1.el9_8, ipa-client-epn 4.13.4-1.el9_8, +12 more
    fixed: vendor fix RHSA-2026:70564
  • Red Hat Enterprise Linux AppStream (v. 10) ipa 4.13.4-1.el10_2, ipa-client 4.13.4-1.el10_2, ipa-common 4.13.4-1.el10_2, ipa-server 4.13.4-1.el10_2, ipa-selinux 4.13.4-1.el10_2, ipa-client-epn 4.13.4-1.el10_2, +12 more
    fixed: vendor fix RHSA-2026:72279
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) pyusb 1.0.0-9.module+el8.1.0+4098+f286395e, pyusb 1.0.0-9.module+el8.1.0+4107+4a66eb87, ipa 4.9.2-10.module+el8.4.0+25230+139d38e7.6, ipa 4.9.2-10.module+el8.4.0+25231+beff12c5.6, custodia 0.6.0-3.module+el8.1.0+4098+f286395e, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:93452
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) pyusb 1.0.0-9.module+el8.1.0+4098+f286395e, pyusb 1.0.0-9.module+el8.1.0+4107+4a66eb87, ipa 4.9.8-13.module+el8.6.0+25053+bc39327b.4, ipa 4.9.8-13.module+el8.6.0+25054+4a5dd89b.4, custodia 0.6.0-3.module+el8.1.0+4098+f286395e, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:89836
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) custodia 0.6.0-3.module+el8.1.0+4098+f286395e, ipa 4.9.11-11.module+el8.8.0+25043+cab6964c.6, ipa 4.9.11-11.module+el8.8.0+25045+e21657cc.6, pyusb 1.0.0-9.1.module+el8.7.0+15690+c8d45780, pyusb 1.0.0-9.1.module+el8.7.0+15691+2b2c1dd5, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:83461
show 11 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) ipa 4.10.1-12.el9_2.7, ipa-client 4.10.1-12.el9_2.7, ipa-common 4.10.1-12.el9_2.7, ipa-server 4.10.1-12.el9_2.7, ipa-selinux 4.10.1-12.el9_2.7, ipa-client-epn 4.10.1-12.el9_2.7, +8 more
    fixed: vendor fix RHSA-2026:83085
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) ipa 4.11.0-15.el9_4.9, ipa-client 4.11.0-15.el9_4.9, ipa-common 4.11.0-15.el9_4.9, ipa-server 4.11.0-15.el9_4.9, ipa-selinux 4.11.0-15.el9_4.9, ipa-client-epn 4.11.0-15.el9_4.9, +8 more
    fixed: vendor fix RHSA-2026:83084
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) ipa 4.12.2-15.el10_0.7, ipa-client 4.12.2-15.el10_0.7, ipa-common 4.12.2-15.el10_0.7, ipa-server 4.12.2-15.el10_0.7, ipa-selinux 4.12.2-15.el10_0.7, ipa-client-epn 4.12.2-15.el10_0.7, +12 more
    fixed: vendor fix RHSA-2026:82935
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) ipa 4.12.2-14.el9_6.8, ipa-client 4.12.2-14.el9_6.8, ipa-common 4.12.2-14.el9_6.8, ipa-server 4.12.2-14.el9_6.8, ipa-selinux 4.12.2-14.el9_6.8, ipa-client-epn 4.12.2-14.el9_6.8, +12 more
    fixed: vendor fix RHSA-2026:83083
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) pyusb 1.0.0-9.module+el8.1.0+4098+f286395e, pyusb 1.0.0-9.module+el8.1.0+4107+4a66eb87, ipa 4.9.2-10.module+el8.4.0+25230+139d38e7.6, ipa 4.9.2-10.module+el8.4.0+25231+beff12c5.6, custodia 0.6.0-3.module+el8.1.0+4098+f286395e, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:93452
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) pyusb 1.0.0-9.module+el8.1.0+4098+f286395e, pyusb 1.0.0-9.module+el8.1.0+4107+4a66eb87, ipa 4.9.8-13.module+el8.6.0+25053+bc39327b.4, ipa 4.9.8-13.module+el8.6.0+25054+4a5dd89b.4, custodia 0.6.0-3.module+el8.1.0+4098+f286395e, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:89836
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) custodia 0.6.0-3.module+el8.1.0+4098+f286395e, ipa 4.9.11-11.module+el8.8.0+25043+cab6964c.6, ipa 4.9.11-11.module+el8.8.0+25045+e21657cc.6, pyusb 1.0.0-9.1.module+el8.7.0+15690+c8d45780, pyusb 1.0.0-9.1.module+el8.7.0+15691+2b2c1dd5, softhsm 2.6.0-5.module+el8.4.0+10227+076cd560, +50 more
    fixed: vendor fix RHSA-2026:83461
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) python3-ipatests 4.13.4-1.el9_8
    fixed: vendor fix RHSA-2026:70564
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) python3-ipatests 4.13.4-1.el10_2
    fixed: vendor fix RHSA-2026:72279
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) python3-ipatests 4.12.2-15.el10_0.7
    fixed: vendor fix RHSA-2026:82935
  • Red Hat Enterprise Linux Server (v. 7 ELS) ipa 4.6.8-5.el7_9.25, ipa-client 4.6.8-5.el7_9.25, ipa-common 4.6.8-5.el7_9.25, ipa-server 4.6.8-5.el7_9.25, ipa-server-dns 4.6.8-5.el7_9.25, python2-ipalib 4.6.8-5.el7_9.25, +6 more
    fixed: vendor fix RHSA-2026:93071

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
1 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.