CVE detail
CVE-2026-34873
An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- CVE-2026-34873Microsoft MSRC
Information published.
vendormsrc.microsoft.comMay 7, 2026, 8:13 AM - https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-client-impersonation-while-resuming-tls13-session/mbed-tls.readthedocs.io
No excerpt available.
Vendor Advisorymbed-tls.readthedocs.ioApr 1, 2026, 9:17 PM - https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbed-tls.readthedocs.io
No excerpt available.
Vendor Advisorymbed-tls.readthedocs.ioApr 1, 2026, 9:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2017-14032CVSS 8.1 · High
ARM mbed TLS before 1.3.21 and 2.x before 2.1.9, if optional authentication is configured, allows remote attackers to bypass peer authentication via an X.509 certificate chain wit…
- CVE-2026-58066CVSS 9.8 · Critical
Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to saml…
- CVE-2026-56850CVSS 4.1 · Medium
A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with…
- CVE-2026-14305CVSS 5.3 · Medium
The WP Delicious WordPress plugin before 1.10.2 does not perform an authorization check on one of its AJAX actions, allowing unauthenticated users to modify limited post metadata…
- CVE-2026-63238CVSS 6.5 · Medium
An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any account, including administrator accounts, by supplying a valid user UUI…
- CVE-2026-13690CVSS 7.4 · High
The UsersWP WordPress plugin before 1.2.67 does not validate the selected authentication provider in its two-factor login handler, allowing an attacker who already knows a user's…