Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-22693

HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The co
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e9b74237febafb77141aff143ca2cd3ceb5fa4fbc36cdcafc3d76922610018ad
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"harfbuzz","vendor":"harfbuzz","versions":[{"status":"affected","version":"< 12.3.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/cna/metrics/0/cvssV3_1

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:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/01/11/1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/adp/0/references/0
{"url":"http://www.openwall.com/lists/oss-security/2026/01/12/1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/adp/0/references/1
{"name":"https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daae","tags":["x_refsource_MISC"],"url":"https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daae"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /containers/cna/references/1
{"name":"https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7ww","tags":["x_refsource_CONFIRM"],"url":"https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7ww"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7887156b2b2bd2bce818d7fa736fa1854a0b998b43a63d46a73fb24f1904f4b · sha256:8adc66c3ab4870d7… · /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.

← Back to CVE Explorer