Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-63mg-xp9j-jfcm
Advisory ID github_osv/GHSA-63mg-xp9j-jfcm
Aliases CVE-2026-33578
Summary OpenClaw: Google Chat and Zalouser group sender allowlist bypass via policy downgrade ## Summary When only a route-level group allowlist was configured, sender policy resolution silently downgraded from `allowlist` to `open` instead of preserving the configured group policy. ## Impact Any member of an allowlisted Google Chat space or Zalouser group could interact with the bot even when the operator intended sender-level restrictions. ## Affected Component `extensions/googlechat/src/monitor-access.ts, extensions/zalouser/src/monitor.ts` ## Fixed Versions - Affected: `<= 2026.3.24` - Patched: `>= 2026.3.28` - Latest stable `2026.3.28` contains the fix. ## Fix Fixed by commit `e64a881ae0` (`Channels: preserve routed group policy`). OpenClaw thanks @AntAISecurityLab for reporting.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-863 Incorrect Authorization
System Score Found at
cvssv3.1 9.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-63mg-xp9j-jfcm/GHSA-63mg-xp9j-jfcm.json
cvssv4 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-63mg-xp9j-jfcm/GHSA-63mg-xp9j-jfcm.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/openclaw/openclaw
CVE-2026-33578 https://nvd.nist.gov/vuln/detail/CVE-2026-33578
e64a881ae0fb8af18e451163f4c2d611d60cc8e4 Other https://github.com/openclaw/openclaw/commit/e64a881ae0fb8af18e451163f4c2d611d60cc8e4
GHSA-63mg-xp9j-jfcm Advisory https://github.com/openclaw/openclaw/security/advisories/GHSA-63mg-xp9j-jfcm
openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensions Advisory https://www.vulncheck.com/advisories/openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensions
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-63mg-xp9j-jfcm/GHSA-63mg-xp9j-jfcm.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-63mg-xp9j-jfcm/GHSA-63mg-xp9j-jfcm.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-01T03:55:25Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33578.json

Source Advisory: vulnrichment/CVE-2026-33578

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]