Cyber Resilience

CVE-2023-26116

Angularjs 1.2.21 – 1.8.3

Public PoC
Published
30 March 2023
Modified
20 November 2025
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.017 75th percentile
Risk Priority 48 floored blend · peak EPSS

Summary

CVE-2023-26116 is a medium-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Angularjs Angularjs. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Endpoint Denial of Service (T1499); ranked in the top 25% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

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,…

more

which can result in catastrophic backtracking.

CWE(s)
CWE-1333

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
T1499.003 Application Exhaustion Flood Impact
Adversaries may target resource intensive features of applications to cause a denial of service (DoS), denying availability to those applications.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-26117Same product: Angularjs Angularjs
CVE-2023-26118Same product: Angularjs Angularjs
CVE-2024-3772Same product: Fedoraproject Fedora
CVE-2024-22640Same product: Fedoraproject Fedora
CVE-2023-36053Same product: Fedoraproject Fedora
CVE-2023-28755Same product: Fedoraproject Fedora
CVE-2023-28756Same product: Fedoraproject Fedora
CVE-2024-21490Same vendor: Angularjs
CVE-2024-28180Same product: Fedoraproject Fedora
CVE-2023-29407Same product: Fedoraproject Fedora

Affected Assets

angularjs
angularjs
1.2.21 — 1.8.3
fedoraproject
fedora
38

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent inefficient regex via reviews, static analysis, and safe libraries.

ID.RA-01 partial match
prevents

Vulnerability identification processes can discover ReDoS issues in existing code but do not stop their introduction.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect and reject regex patterns with exponential worst-case complexity.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates review of algorithmic efficiency, directly addressing ReDoS-prone regex.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify input-validation rules that limit regex complexity.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage avoidance of computationally expensive constructs such as catastrophic backtracking.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly prohibit or limit the use of inefficient regular expressions.

References