OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in Telegram webhook authentication that allows attackers to brute-force weak webhook secrets. The vulnerability enables repeated authentication guesses without throttling, permitting attackers to systematically guess webhook secrets through brute-force attacks.
CVE-2026-35628
Score 4.8 from GitHub Security Advisory published 2026-03-27. NVD baseline CVSS 4.8; sources differ by 0.0.
- 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
- 20.6%
- KEV
- Not listed
Published
April 9, 2026
Last Modified
June 23, 2026
References (3)
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| npm | openclaw | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| openclaw | — | — | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 40× 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
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- 2026-06-21 14:56 UTCEPSS rescore
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- 2026-06-15 17:49 UTCEPSS rescore
- 2026-06-15 04:50 UTCEG score recompute
- 2026-06-15 04:50 UTCGHSA enrichment
- 2026-06-14 23:18 UTCEPSS rescore
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- 2026-06-11 20:22 UTCEG score recompute
- 2026-06-11 20:22 UTCGHSA enrichment
- 2026-06-11 14:00 UTCEPSS rescore
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- 2026-06-10 12:46 UTCEG score recompute
- 2026-06-10 12:46 UTCGHSA enrichment
- 2026-06-09 12:54 UTCEG score recompute
- 2026-06-09 12:54 UTCGHSA enrichment
- 2026-06-08 14:17 UTCEPSS rescore
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- 2026-06-08 08:17 UTCEG score recompute
- 2026-06-08 08:17 UTCGHSA enrichment
- 2026-06-07 15:25 UTCEPSS rescore
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- 2026-06-07 15:25 UTCEPSS rescore
- 2026-06-07 08:26 UTCEG score recompute
- 2026-06-07 08:26 UTCGHSA enrichment
- 2026-06-06 13:47 UTCEPSS rescore
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- 2026-05-20 22:38 UTCEPSS rescore
- 2026-05-20 22:38 UTCEPSS rescore
- 2026-05-20 18:00 UTCEG score recompute
- 2026-05-20 18:00 UTCGHSA enrichment
- 2026-05-20 11:22 UTCEPSS rescore
- 2026-05-20 11:22 UTCEPSS rescore
Related CVEs(same product + same CWE)
Same product
5 shownnpm:openclaw
Same CWE
10 shownCWE-307 · CWE-521
Frequently asked(5)
What is CVE-2026-35628?
When was CVE-2026-35628 disclosed?
Is CVE-2026-35628 actively exploited?
What is the CVSS score of CVE-2026-35628?
How do I remediate CVE-2026-35628?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35628
Is Your Infrastructure Affected by CVE-2026-35628?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.