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Fencer Vulns
medium 5.4

CVE-2018-1999045 json

Improper Authentication in Jenkins

published 2018-08-23 8 y ago modified 2026-06-17 4 mo ago also GHSA-q4cq-r7hg-pxqq , EUVD-2022-4877

cvss
5.4
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.

Patch / fix

  • maven org.jenkins-ci.main:jenkins-core 2.121.3, 2.138

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-2018-1999045 updated cvss 4.6

jenkins: "Remember me" cookie was evaluated even if that feature is disabled

  • Red Hat OpenShift Container Platform 3.2 jenkins Red Hat OpenShift Container Platform 3.3 jenkins Red Hat OpenShift Container Platform 3.4 jenkins Red Hat OpenShift Container Platform 3.5 jenkins Red Hat OpenShift Container Platform 3.6 jenkins Red Hat OpenShift Container Platform 3.7 jenkins
    +3 more products
    Red Hat OpenShift Container Platform 3.9 jenkins Red Hat OpenShift Container Platform 3.10 jenkins Red Hat OpenShift Enterprise 3.1 jenkins
    affected: no fix available “Fix deferred”
  • Red Hat OpenShift Container Platform 3.11 jenkins
    not affected: vulnerable code not present

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

Exploit prediction

0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:P/I:P/A:N
GitHub 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.jenkins-ci.main:jenkins-core
<2.121.3
>=2.122, <2.138
2.121.3
2.138

Classification

Weakness
Technology feeds

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.