HOMEVULNERABILITIESCVE-2026-33580
MEDIUM

CVE-2026-33580

CWE-307Published: March 31, 2026· Updated: Apr 1, 2026

6.5
CVSS v3.1
EPSS:0.06%probability of exploitation in 30 daysPercentile:19.9th

Official Description

OpenClaw before 2026.3.28 contains a missing rate limiting vulnerability in the Nextcloud Talk webhook authentication that allows attackers to brute-force weak shared secrets. Attackers who can reach the webhook endpoint can exploit this to forge inbound webhook events by repeatedly attempting authentication without throttling.

NVD Source

Technical Analysis

CVE-2026-33580 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

openclaw1 product
openclaw
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/openclaw/openclaw/commit/e403decb6e20091b5402780a7ccd2085f98aa3cd
ADVISORYhttps://github.com/openclaw/openclaw/security/advisories/GHSA-9528-x887-j2fp
ADVISORYhttps://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-rate-limiting-on-webhook-shared-secret-authentication

All References (3)

→
https://github.com/openclaw/openclaw/commit/e403decb6e20091b5402780a7ccd2085f98aa3cdPatch
→
https://github.com/openclaw/openclaw/security/advisories/GHSA-9528-x887-j2fpVendor Advisory
→
https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-rate-limiting-on-webhook-shared-secret-authenticationThird Party Advisory

Quick Facts

CVE IDCVE-2026-33580
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-307
CISA KEVNo
EPSS (30d)0.06%
Affected1 vendor
PublishedMar 31, 2026

Related CVEs (CWE-307)

CVE-2026-43914
9.8
CVE-2026-24445
9.8
CVE-2025-69246
9.8
CVE-2026-25945
9.8
CVE-2026-26305
9.8
CVE-2026-33640
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33580 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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