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Medium, CVSS 5.3amended

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

CVE-2023-26116GHSA-2vrf-hf26-jrp5

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm angular

    Affected
    <= 1.8.3
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS
  • CVE-2023-26116: 1.70% estimated exploitation activity in the next 30 days; percentile 77.17 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

All versions of the package angular 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.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-2vrf-hf26-jrp5

  2. Revision 1 · created ·

    Published from osv record GHSA-2vrf-hf26-jrp5

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2023-26116

Advisory: angular vulnerable to regular expression denial of service via the angular.copy() utility
IDs: CVE-2023-26116, GHSA-2vrf-hf26-jrp5
Record: https://patchnext.com/advisories/cve-2023-26116 (revision 2, source checked 26 Oct 2026, 12:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm angular: affected <= 1.8.3

## Suggested inspection (read-only)
- `npm ls angular --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on angular.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-2vrf-hf26-jrp5 (OSV record GHSA-2vrf-hf26-jrp5 lists affected ranges: npm angular >=0 <=1.8.3)
- Verified: https://github.com/advisories/GHSA-2vrf-hf26-jrp5 (GitHub-reviewed advisory GHSA-2vrf-hf26-jrp5 lists affected ranges: npm angular >=0 <=1.8.3)

Commands are suggestions: review each one before running it.

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