CVE Explorer

CVE-2026-33996

LibJWT is a C JSON Web Token Library. Starting in version 3.0.0 and prior to version 3.3.0, the JWK parsing for RSA-PSS did not protect against a NULL value when expecting to parse JSON string values. A specially crafted JWK file could exploit this behavior by using integers in places where the code expected a string. This was fixed in v3.3.0. A workaround is available. Users importing keys through a JWK file should not do so from untrusted sources. Use the `jwk2key` tool to check for validity o

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:76decefbd4de0e93623969b5c15b76abc97abef39c5bb0cfbd6036e0ed5dc204

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"libjwt","vendor":"benmcollins","versions":[{"status":"affected","version":">= 3.0.0, < 3.3.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:9396e4b200e940f7a983a49441ab4303349e93322b6b3229acf76e912cc3bae8 · sha256:8c405d18ba09d78a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":5.8,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:A/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:9396e4b200e940f7a983a49441ab4303349e93322b6b3229acf76e912cc3bae8 · sha256:8c405d18ba09d78a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:9396e4b200e940f7a983a49441ab4303349e93322b6b3229acf76e912cc3bae8 · sha256:8c405d18ba09d78a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/benmcollins/libjwt/commit/cfd890286fa49ae61b534c937c9f0428b5c6034c","tags":["x_refsource_MISC"],"url":"https://github.com/benmcollins/libjwt/commit/cfd890286fa49ae61b534c937c9f0428b5c6034c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:9396e4b200e940f7a983a49441ab4303349e93322b6b3229acf76e912cc3bae8 · sha256:8c405d18ba09d78a… · /containers/cna/references/1

{"name":"https://github.com/benmcollins/libjwt/security/advisories/GHSA-ph96-hqpc-9f66","tags":["x_refsource_CONFIRM"],"url":"https://github.com/benmcollins/libjwt/security/advisories/GHSA-ph96-hqpc-9f66"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:9396e4b200e940f7a983a49441ab4303349e93322b6b3229acf76e912cc3bae8 · sha256:8c405d18ba09d78a… · /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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