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CVE-2026-53532 - OpenEXR: Unhandled assert abort in HTJ2K decoder via crafted QCD marker (DoS)

CVE ID : CVE-2026-53532 Published : Aug. 24, 2026, 11:16 p. m. • 1 hour, 55 minutes ago Description : OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3. 4. 0 through 3. 4. 12, a crafted HTJ2K-compressed EXR file causes an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters.

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