Packages
- php-phpseclib - implementations of an arbitrary-precision integer arithmetic library
Details
It was discovered that phpseclib did not perform constant-time padding
validation when using AES in CBC mode. A remote attacker could possibly
use this issue to obtain sensitive information. (CVE-2026-32935)
It was discovered that phpseclib did not use a constant-time comparison
when validating SSH packet authentication codes. A remote attacker could
possibly use this issue to obtain sensitive information. (CVE-2026-40194)
It was discovered that phpseclib did not properly limit object identifier
lengths when parsing ASN.1 data. An attacker could possibly use this issue
to cause phpseclib to use excessive resources, leading to a denial of
service. (CVE-2026-44167)
It was discovered that phpseclib did not perform constant-time padding
validation when using AES in CBC mode. A remote attacker could possibly
use this issue to obtain sensitive information. (CVE-2026-32935)
It was discovered that phpseclib did not use a constant-time comparison
when validating SSH packet authentication codes. A remote attacker could
possibly use this issue to obtain sensitive information. (CVE-2026-40194)
It was discovered that phpseclib did not properly limit object identifier
lengths when parsing ASN.1 data. An attacker could possibly use this issue
to cause phpseclib to use excessive resources, leading to a denial of
service. (CVE-2026-44167)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | php-phpseclib – 2.0.51-1ubuntu0.1~esm1 | ||
| 24.04 LTS noble | php-phpseclib – 2.0.47-1ubuntu0.1~esm1 | ||
| 22.04 LTS jammy | php-phpseclib – 2.0.36-1ubuntu0.1~esm3 | ||
| 20.04 LTS focal | php-phpseclib – 2.0.23-2ubuntu0.1~esm3 | ||
| 18.04 LTS bionic | php-phpseclib – 2.0.9-1ubuntu0.1~esm3 | ||
| 16.04 LTS xenial | php-phpseclib – 2.0.1-1ubuntu0.1~esm1 | ||
Reduce your security exposure
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