PYSEC-2026-3957

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/openssl-encrypt/PYSEC-2026-3957.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-3957
Aliases
Published
2026-08-27T17:20:57Z
Modified
2026-09-10T13:00:04Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

PyPI / openssl-encrypt

Package

Name
openssl-encrypt
View open source insights on deps.dev
Purl
pkg:pypi/openssl-encrypt

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.4.9

Affected versions

0.*
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.3.0
0.3.1
0.3.2
0.3.3
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.5.0
0.5.1
0.5.3
0.6.0rc1
0.7.0rc2
0.7.1
0.7.2
0.8.0
0.8.1
0.8.2
0.9.2
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.4.0b3
1.4.0b4
1.4.0b5
1.4.0b6
1.4.0b7
1.4.0b8
1.4.0
1.4.1rc2
1.4.1
1.4.2
1.4.4
1.4.5
1.4.6
1.4.7
1.4.8

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/openssl-encrypt/PYSEC-2026-3957.yaml"