PYSEC-2026-3957

vendorUSosv
view advisory published 2026-08-27Licence: CC-BY-4.0

openssl_encrypt versions before 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypting the payload. Attackers can modify the file header to delete recovery-slot fields and bypass authentication, silently removing recovery paths the owner deliberately added.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-81680USmedium5.3—
openssl_encrypt versions before 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypt…
02

references

External citations — patches, advisories, analysis.

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