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CVE-2026-33144

GPAC is an open-source multimedia framework. Prior to commit 86b0e36, a heap-based buffer overflow (write) vulnerability was discovered in GPAC MP4Box. The vulnerability exists in the gf_xml_parse_bit_sequence_bs function in utils/xml_bin_custom.c when processing a crafted NHML file containing malicious <BS> (BitSequence) elements. An attacker can exploit this by providing a specially crafted NHML file, causing an out-of-bounds write on the heap. This issue has been via commit 86b0e36.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7361835aa611e14b02f20ddf05c7f20ac237e71d74a1594ee08c95ab6ca38cab
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"gpac","vendor":"gpac","versions":[{"status":"affected","version":"< 86b0e36ea4c71402fbdaf7e13d73ba8841003e72"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/gpac/gpac/commit/86b0e36ea4c71402fbdaf7e13d73ba8841003e72","tags":["x_refsource_MISC"],"url":"https://github.com/gpac/gpac/commit/86b0e36ea4c71402fbdaf7e13d73ba8841003e72"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /containers/cna/references/1
{"name":"https://github.com/gpac/gpac/security/advisories/GHSA-3jw5-9pmw-vmfg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gpac/gpac/security/advisories/GHSA-3jw5-9pmw-vmfg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/gpac/gpac/security/advisories/GHSA-3jw5-9pmw-vmfg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42ecaf0861967e3dac60d369c60fb7e83958acf45cec323ea168d1fe6b023c92 · sha256:5c4084d491aae7c1… · /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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