CVE-2026-31790 — Improper Check for Unusual or Exceptional Conditions in Openssl
Severity
7.5HIGHNVD
EPSS
0.0%
top 93.71%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 7
Latest updateApr 13
Description
Issue summary: Applications using RSASVE key encapsulation to establish
a secret encryption key can send contents of an uninitialized memory buffer to
a malicious peer.
Impact summary: The uninitialized buffer might contain sensitive data from the
previous execution of the application process which leads to sensitive data
leakage to an attacker.
RSA_public_encrypt() returns the number of bytes written on success and -1
on error. The affected code tests only whether the return value is non-zero…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages5 packages
🔴Vulnerability Details
4GHSA▶
GHSA-vgxx-5xj5-q97x: Issue summary: Applications using RSASVE key encapsulation to establish
a secret encryption key can send contents of an uninitialized memory buffer to↗2026-04-08
OSV▶
CVE-2026-31790: Issue summary: Applications using RSASVE key encapsulation to establish
a secret encryption key can send contents of an uninitialized memory buffer to↗2026-04-07
OSV▶
CVE-2026-31790: Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to↗2026-04-07
📋Vendor Advisories
5🕵️Threat Intelligence
9Hackernews
▶
💬Community
1Bugzilla▶
CVE-2026-31790 openssl: openssl: Information Disclosure from Uninitialized Memory via Invalid RSA Public Key↗2026-03-25