CVE-2026-42438 json
OpenClaw 2026.4.9 < 2026.4.10 - Sender Policy Bypass in Host Media Attachment Reads
published 2026-04-17 6 mo ago modified 2026-06-17 4 mo ago also GHSA-jhpv-5j76-m56h , EUVD-2026-27259
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
OpenClaw versions 2026.4.9 before 2026.4.10 contain a sender policy bypass vulnerability in the outbound host-media attachment read helper that allows unauthorized local file disclosure. Attackers with denied read access via toolsBySender or group policy can trigger host-media attachment loading to bypass sender and group-scoped authorization boundaries and retrieve readable local files through the outbound media path.
Patch / fix
- npm openclaw 2026.4.10
- OpenClaw OpenClaw 2026.4.10
- github.com/openclaw/openclaw@c949af9 commit
- github.com/openclaw/openclaw#64459 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.9 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N |
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| CNA | 4.0 | 4.9 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | openclaw | >=2026.4.9, <2026.4.10 |
2026.4.10 |
Affected products
- OpenClaw OpenClaw
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/openclaw/openclaw/commit/c949af9fabf3873b5b7c484090cb5f5ab6049a98
patch, web
-
github.com
/openclaw/openclaw/pull/64459
web
-
github.com
/openclaw/openclaw/security/advisories/GHSA-jhpv-5j76-m56h
vendor-advisory, web
-
vulncheck.com
/advisories/openclaw-sender-policy-bypass-in-host-media-attachment-reads
third-party-advisory
-
github.com
/openclaw/openclaw
package
Sources
- CVE List CVE-2026-42438
- GitHub Advisory GHSA-jhpv-5j76-m56h
- NVD CVE-2026-42438
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