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Fencer Vulns
medium 5.3

CVE-2023-26116 json

angular vulnerable to regular expression denial of service via the angular.copy() utility

published 2023-03-30 3 y ago modified 2026-09-10 1 mo ago also GHSA-2vrf-hf26-jrp5 , EUVD-2023-0833

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Versions of the package angular from 1.2.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the angular.copy() utility function due to the usage of an insecure regular expression. Exploiting this vulnerability is possible by a large carefully-crafted input, which can result in catastrophic backtracking.

Patch / fix

  • angular.js Debian 12 1.8.3-1+deb12u1
  • angular.js Debian 13 1.8.3-2

debian advisories DEBIAN-CVE-2023-26116

  • angular.js Ubuntu 22.04 LTS 1.8.2-2ubuntu0.1
  • angular.js Ubuntu 24.04 LTS 1.8.3-1ubuntu0.24.04.1
  • angular.js Ubuntu Pro 16.04 LTS 1.2.28-1ubuntu2+esm1
  • angular.js Ubuntu Pro 18.04 LTS 1.5.10-1ubuntu0.1~esm1
  • angular.js Ubuntu Pro 20.04 LTS 1.7.9-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-26116

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2023-26116 updated cvss 5.3

angularjs: Regular Expression Denial of Service via angular.copy()

  • Red Hat OpenShift Service Mesh 2.1 servicemesh-grafana
    affected: no fix planned “Will not fix”
  • Red Hat Ceph Storage 3 grafana
    affected: no fix planned “Out of support scope”
  • Red Hat Ceph Storage 4 rhceph/rhceph-4-dashboard-rhel8
    affected: no fix available
  • Red Hat Enterprise Linux 6 firefox
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more Red Hat Enterprise Linux 9 grafana, grafana-selinux
    affected: no fix planned “Will not fix”
  • Red Hat Fuse 7 angularjs angularjs Red Hat JBoss Data Grid 7 angularjs angularjs Red Hat JBoss Enterprise Application Platform 6 keycloak-adapter-sso7_2-eap6 keycloak-adapter-sso7_2-eap6
    affected: no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 16.1 qpid-dispatch-tools, qpid-dispatch-router Red Hat Single Sign-On 7 angularjs angularjs Red Hat Storage 3 grafana
    affected: no fix planned “Will not fix”
  • Red Hat Ansible Tower 3 angular, angularjs Red Hat Enterprise Linux 7 firefox, thunderbird Red Hat Enterprise Linux 8 firefox, mozjs60, thunderbird Red Hat Enterprise Linux 9 gjs, polkit, firefox, firefox-x11, polkit-libs, thunderbird Red Hat JBoss Enterprise Application Platform 7 angularjs angularjs Red Hat JBoss Enterprise Application Platform Expansion Pack angularjs angularjs
    +2 more products
    Red Hat OpenStack Platform 16.2 qpid-dispatch-tools, qpid-dispatch-router Red Hat Quay 3 quay/quay-rhel8
    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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • security.snyk.io https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044 referenced PoC, tagged "exploit" by a source, unverified
  • security.snyk.io https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320 referenced PoC, tagged "exploit" by a source, unverified
  • security.snyk.io https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321 referenced PoC, tagged "exploit" by a source, unverified
  • security.snyk.io https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322 referenced PoC, tagged "exploit" by a source, unverified
  • stackblitz.com https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redos referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
npm angular
<=1.8.3
 no fix listed

Affected products

  • n/a angular
  • n/a org.webjars.bower:angular
  • n/a org.webjars.npm:angular
  • n/a org.webjars.bowergithub.angular:angular

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

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.