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CVE-2026-42261

PromptHub is an all-in-one AI toolbox for prompt, skill, and agent management. From version 0.4.9 to before version 0.5.4, apps/web/src/routes/skills.ts exposes an authenticated endpoint POST /api/skills/fetch-remote that fetches a user-supplied URL server-side and reflects the response body (up to 5 MB) back to the caller. The SSRF protection in apps/web/src/utils/remote-http.ts (isPrivateIPv6) attempts to block private/loopback destinations, but multiple alternate-but-valid IPv6 representation
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:def8188eb0a8123c4e6b1c120d6b2880a3ad590d04c17455835f6665fd933d32
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"PromptHub","vendor":"legeling","versions":[{"status":"affected","version":">= 0.4.9, < 0.5.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/legeling/PromptHub/releases/tag/v0.5.4","tags":["x_refsource_MISC"],"url":"https://github.com/legeling/PromptHub/releases/tag/v0.5.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/references/1
{"name":"https://github.com/legeling/PromptHub/security/advisories/GHSA-9fhh-fjfg-5mr6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/legeling/PromptHub/security/advisories/GHSA-9fhh-fjfg-5mr6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/legeling/PromptHub/security/advisories/GHSA-9fhh-fjfg-5mr6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce460c4de37c58b5a007a88f12e56dcc4ed8f933f478ebe108f7d3d6a6726fd4 · sha256:30edc41334023ed0… · /containers/adp/0/references/0

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.

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