GHSA-94G3-G5V7-Q4JG
Vulnerability from github – Published: 2026-03-19 16:42 – Updated: 2026-03-20 21:20
VLAI?
Summary
phpseclib's AES-CBC unpadding susceptible to padding oracle timing attack
Details
Impact
Those using AES in CBC mode may be susceptible to a padding oracle timing attack.
Patches
https://github.com/phpseclib/phpseclib/commit/ccc21aef71eb170e9bf819b167e67d1fd9e6e788
Workarounds
Use AES in CTR, CFB or OFB modes
Severity ?
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 3.0.49"
},
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.50"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.0.51"
},
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.0.52"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.0.26"
},
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.27"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-32935"
],
"database_specific": {
"cwe_ids": [
"CWE-208"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-19T16:42:18Z",
"nvd_published_at": "2026-03-20T03:16:00Z",
"severity": "HIGH"
},
"details": "### Impact\nThose using AES in CBC mode may be susceptible to a padding oracle timing attack.\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/ccc21aef71eb170e9bf819b167e67d1fd9e6e788\n\n### Workarounds\nUse AES in CTR, CFB or OFB modes",
"id": "GHSA-94g3-g5v7-q4jg",
"modified": "2026-03-20T21:20:27Z",
"published": "2026-03-19T16:42:18Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/security/advisories/GHSA-94g3-g5v7-q4jg"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32935"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/commit/ccc21aef71eb170e9bf819b167e67d1fd9e6e788"
},
{
"type": "PACKAGE",
"url": "https://github.com/phpseclib/phpseclib"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "phpseclib\u0027s AES-CBC unpadding susceptible to padding oracle timing attack"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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