Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-28394

OpenClaw versions prior to 2026.2.15 contain a denial of service vulnerability in the web_fetch tool that allows attackers to crash the Gateway process through memory exhaustion by parsing oversized or deeply nested HTML responses. Remote attackers can social-engineer users into fetching malicious URLs with pathological HTML structures to exhaust server memory and cause service unavailability.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f3d75875e4d407ef8f87e83d490d4f828c104f902f4e5981d16a34f76ba4ff96
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/openclaw","product":"OpenClaw","vendor":"OpenClaw","versions":[{"lessThan":"2026.2.15","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/openclaw/openclaw/commit/166cf6a3e04c7df42bea70a7ad5ce2b9df46d147"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/references/1
{"name":"GitHub Security Advisory (GHSA-p536-vvpp-9mc8)","tags":["vendor-advisory"],"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-p536-vvpp-9mc8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/references/0
{"name":"VulnCheck Advisory: OpenClaw < 2026.2.15 - Denial of Service via Unbounded Response Parsing in web_fetch Tool","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-response-parsing-in-web-fetch-tool"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07b3e1373718bc3dd0879259294e1e2bef6a74ebd5c20d611a08687dc6525cb4 · sha256:17c8f35bfc26c7a0… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer