The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.
CVE-2026-32896
This medium-severity CVE scores 4.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.8
- EG Score
- 4.8(medium)
- EPSS
- 16.2%
- KEV
- Not listed
Published
March 21, 2026
Last Modified
June 23, 2026
References (4)
- linkhttps://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm
- linkhttps://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590
- linkhttps://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806
- linkhttps://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| openclaw | — | 2026.2.21 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
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- 2026-06-29 05:32 UTCOSV refresh
- 2026-06-28 14:07 UTCEPSS rescore
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- 2026-06-22 14:25 UTCEPSS rescore
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- 2026-06-11 23:40 UTCEG score recompute
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- 2026-06-10 18:24 UTCEG score recompute
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- 2026-06-08 14:17 UTCEPSS rescore
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- 2026-06-07 15:25 UTCEPSS rescore
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- 2026-06-07 15:25 UTCEPSS rescore
- 2026-06-07 13:48 UTCEG score recompute
- 2026-06-06 13:47 UTCEPSS rescore
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- 2026-05-29 13:44 UTCEPSS rescore
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- 2026-05-26 13:44 UTCEPSS rescore
- 2026-05-26 13:39 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-32896?
When was CVE-2026-32896 disclosed?
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