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    CVE-2023-26116

    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.

    Published:Mar 30, 2023
    Last Modified:Nov 20, 2025
    EPS:Mar 30, 2023
    EPSS Score:0.0195
    CVSS Score:5.3

    Affected Products

    Vendor
    Angularjs
    Product
    Angularjs
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redoshttps://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redos

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-492 Regular Expression Exponential Blowup

    Related CVEs

    CVE-2025-4690 (CVSS 4.3) — A regular expression used by AngularJS'  linky https://docs.angularjs.org/api/ngSanitize/filter/linky  filter …
    CVE-2024-8373 (CVSS 4.8) — Improper sanitization of the value of the [srcset] attribute in <source> HTML elements in AngularJS allows att…
    CVE-2024-8372 (CVSS 4.8) — Improper sanitization of the value of the 'srcset' attribute in AngularJS allows attackers to bypass common im…
    CVE-2023-26118 (CVSS 5.3) — Versions of the package angular from 1.4.9 are vulnerable to Regular Expression Denial of Service (ReDoS) via …
    CVE-2023-26117 (CVSS 5.3) — Versions of the package angular from 1.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via …
    CVE-2022-25869 (CVSS 4.2) — All versions of the package angular; all versions of the package angularjs.core; all versions of the package a…
    CVE-2022-25844 (CVSS 5.3) — The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a …
    CVE-2021-4231 (CVSS 3.5) — A vulnerability was found in Angular up to 11.0.4/11.1.0-next.2. It has been classified as problematic. Affect…
    CVE-2020-7676 (CVSS 5.4) — angular.js prior to 1.8.0 allows cross site scripting. The regex-based input HTML replacement may turn sanitiz…
    CVE-2019-10768 (CVSS 7.5) — In AngularJS before 1.7.9 the function `merge()` could be tricked into adding or modifying properties of `Obje…

    References

    https://lists.fedoraproject.org/archives/list/[email protected]/message/OQWJLE5WE33WNMA54XSJIDXBRK2KL3XJ/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/UDKFLKJ6VZKL52AFVW2OVZRMJWHMW55K/
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321
    https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044
    https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redos
    https://lists.debian.org/debian-lts-announce/2025/07/msg00005.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/OQWJLE5WE33WNMA54XSJIDXBRK2KL3XJ/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/UDKFLKJ6VZKL52AFVW2OVZRMJWHMW55K/
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322
    https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321
    https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044
    https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redos

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High