CVE-2023-26116

Exp

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: 2023-03-30 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-26116 is rated High Exploit Risk (63.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.70%). 5 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.42% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-26116

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-26116

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.27% 1.70% +1.42%
2 2026-03-31 0.25% 0.27% +0.03%
3 2026-03-04 — 0.25% —

Full EPSS history (30 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-26116

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-26116

GitHub Security Advisory for CVE-2023-26116

GHSA-2vrf-hf26-jrp5 · Severity: medium · Ecosystem: npm — angular vulnerable to regular expression denial of service via the angular.copy() utility

OS Trackers for CVE-2023-26116

vendor priority summary link
debian not yet assigned CVE-2023-26116 not yet assigned priority: Debian including 1 source packages (angular.js), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-26116
redhat medium — https://access.redhat.com/security/cve/CVE-2023-26116
suse medium CVE-2023-26116 severity moderate: SUSE including 9 source package names (cockpit, cockpit-bridge, …), 26 product×package rows across 4 product lines (SUSE Linux Enterprise Micro 5.1, SUSE Linux Enterprise Micro 5.2, SUSE Linux Enterprise Micro 5.3, SUSE Linux Enterprise Micro 5.4): Known Not Affected 26. https://www.suse.com/security/cve/CVE-2023-26116/
ubuntu medium CVE-2023-26116 medium priority: Ubuntu including 1 source packages (angular.js), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 6, ignored 5, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2023-26116

Affected software / configurations for CVE-2023-26116

Vendor Product Version Raw CPE
angularjs angularjs >= 1.2.21, <= 1.8.3 cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:*
fedoraproject fedora 38 cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

References for CVE-2023-26116

cvelogic Threat Intelligence