Cyber Resilience

CVE-2026-32935

High

Published: 20 March 2026

Published
20 March 2026
Modified
08 May 2026
KEV Added
—
Patch
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CVSS Score v4 8.2 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0037 29.2th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-32935 is a high-severity Observable Timing Discrepancy (CWE-208) vulnerability in Phpseclib Phpseclib. Its CVSS base score is 8.2 (High).

Operationally, ranked at the 29.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

phpseclib is a PHP secure communications library. Projects using versions 0.1.1 through 1.0.26, 2.0.0 through 2.0.51, and 3.0.0 through 3.0.49 are vulnerable to a to padding oracle timing attack when using AES in CBC mode. This issue has been fixed…

more

in versions 1.0.27, 2.0.52 and 3.0.50.

CWE(s)
CWE-208

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

Affected Assets

phpseclib
phpseclib
≤ 1.0.27 · 2.0.0 — 2.0.52 · 3.0.0 — 3.0.50

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-30 Concealment and Misdirection
addresses: CWE-208

Timing randomization or delays can mask true operation timing and mislead timing-based attacks.

SC-31 Covert Channel Analysis
addresses: CWE-208

Observable timing discrepancies are a primary mechanism for constructing covert timing channels; analysis identifies and bounds them, limiting exploitation.

References