What’s Vulnerable › Vulnerabilities

CVE-2021-36692

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-30 · updated 2026-06-17
• Weakness: CWE-369

Description

libjxl v0.3.7 is affected by a Divide By Zero in issue in lib/extras/codec_apng.cc jxl::DecodeImageAPNG(). When encoding a malicous APNG file using cjxl, an attacker can trigger a denial of service.

Affected products

• libjxl: 0.3.7

References

• https://github.com/libjxl/libjxl/commit/7dfa400ded53919d986c5d3d23446a09e0cf481b
• https://github.com/libjxl/libjxl/issues/308
• https://github.com/libjxl/libjxl/pull/313
• https://github.com/libjxl/libjxl/commit/7dfa400ded53919d986c5d3d23446a09e0cf481b
• https://github.com/libjxl/libjxl/issues/308
• https://github.com/libjxl/libjxl/pull/313

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