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CVE-2026-55406

Buffa is a pure-Rust Protocol Buffers implementation with first-class protobuf editions support. Prior to 0.7.0, a soundness bug in the OwnedView<V> type allowed safe Rust code to trigger a use-after-free: the OwnedView::decode constructor transmuted a borrowed slice to &'static [u8], and the Deref implementation exposed the promoted 'static lifetime on borrowed view fields (such as &'static str and &'static [u8]) to callers, so the borrow checker permitted those references to outlive the OwnedV
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ab43e015cfd63f6046fa192bede47d7527fe13ddcb4c4828728f0cf6ddb335e2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"buffa","vendor":"anthropics","versions":[{"status":"affected","version":"< 0.7.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/anthropics/buffa/commit/7dcf50a1a40eca6ed8d6c6dd59f4310aa0d68b0e","tags":["x_refsource_MISC"],"url":"https://github.com/anthropics/buffa/commit/7dcf50a1a40eca6ed8d6c6dd59f4310aa0d68b0e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/references/2
{"name":"https://github.com/anthropics/buffa/pull/154","tags":["x_refsource_MISC"],"url":"https://github.com/anthropics/buffa/pull/154"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/references/1
{"name":"https://github.com/anthropics/buffa/releases/tag/v0.7.0","tags":["x_refsource_MISC"],"url":"https://github.com/anthropics/buffa/releases/tag/v0.7.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/references/3
{"name":"https://github.com/anthropics/buffa/security/advisories/GHSA-9pwq-gcrx-wghh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/anthropics/buffa/security/advisories/GHSA-9pwq-gcrx-wghh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c7dadd983d1e28a1909353c333ca675e8b8c198c2b1118a2aa6402eefa58385 · sha256:96aadc0735f09ef4… · /containers/cna/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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