Affects wolfSSL used by many popular servers/clients and distro autoconf builds; auth bypass in TLS can broadly undermine secure connections.
CVE-2026-93302
wolfSSL TLS auth bypass: trusted-peer CA verification ignored, enabling forged CA acceptance
Is CVE-2026-93302 being exploited?
Not confirmed. CVE-2026-93302 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-93302?
CVE-2026-93302 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-93302?
Yes. A fix has been recorded for CVE-2026-93302. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-93302 affect?
CVE-2026-93302 affects wolfSSL (autoconf builds), nginx, haproxy, stunnel, and 7 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-93302?
Update wolfSSL to the fixed release or apply patch; avoid using trust_peer_cert or disable openssl-compatible-defaults.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authentication bypass in (D)TLS: attacker knowing loaded CA list can impersonate peers, bypass TLS auth, enable MITM or unauthorized connections.
Immediate action required
- affected>= 5.3.0 and <= 5.9.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- none
- automatable
- no
- technical impact
- partial
Assessed by CISA 29 Sept 2026 (SSVC 2.0.3).
timeline
- 27 Sept 2026Published
- 27 Sept 2026Analysed by vulneraibility.com · same day later
- 29 Sept 2026CISA SSVC assessment: exploitation none · 2 days later
- 29 Sept 2026CVE record last updated · same day later
- Linkgithub.com /wolfSSL/wolfssl/commit/22bcd51d553eaac1de37bee91fdac80cc47961e1
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.