OpenClaw has a SSRF guard bypass via full-form IPv4-mapped IPv6 (loopback / metadata reachable)

CVE-2026-26324 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Summary

OpenClaw's SSRF protection could be bypassed using full-form IPv4-mapped IPv6 literals such as 0:0:0:0:0:ffff:7f00:1 (which is 127.0.0.1). This could allow requests that should be blocked (loopback / private network / link-local metadata) to pass the SSRF guard.

  • Vulnerable component: SSRF guard (src/infra/net/ssrf.ts)
  • Issue type: SSRF protection bypass

Affected Packages / Versions

  • Package: openclaw (npm)
  • Vulnerable: <= 2026.2.13
  • Patched: >= 2026.2.14 (planned next release)

Details

The SSRF guard's IP classification did not consistently detect private IPv4 addresses when they were embedded in IPv6 using full-form IPv4-mapped IPv6 notation. As a result, inputs like 0:0:0:0:0:ffff:7f00:1 could bypass loopback/private network blocking.

Fix Commit(s)

  • c0c0e0f9aecb913e738742f73e091f2f72d39a19

Release Process Note

This advisory is kept in draft state with the patched version set to the planned next release. Once [email protected] is published to npm, the only remaining step should be to publish this advisory.

Thanks @yueyueL for reporting.

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-02-17 21:42:40 UTC
Updated
2026-02-20 16:44:49 UTC
GitHub reviewed
2026-02-17 21:42:40 UTC
NVD published
2026-02-19

EPSS Score

Score Percentile
0.02% 3.64%

CVSS Scores

Base score Version Severity Vector
7.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-jrvc-8ff5-2f9f ↗
CVE CVE-2026-26324 ↗

CWEs

CWE id Name
CWE-918 Server-Side Request Forgery (SSRF)

Credits

  • yueyueL (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm openclaw < 2026.2.14 2026.2.14 —

References

cvelogic Threat Intelligence