GnuTLS Certificate Status Protocol early validation

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability was found in GnuTLS. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Certificate Status Protocol. Such manipulation leads to early validation. This vulnerability is listed as CVE-2026-3832. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in GnuTLS (version now known) and classified as problematic. Affected by this issue is some unknown processing of the component Certificate Status Protocol. The manipulation with an unknown input leads to a early validation vulnerability. Using CWE to declare the problem leads to CWE-179. The product validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification. Impacted is confidentiality. CVE summarizes:

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-3832 since 03/09/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 312106 (CentOS 9 : gnutls-3.8.10-4.el9), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (312106) and CERT Bund (WID-SEC-2026-1312). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • IBM MQ
  • Microsoft Azure Linux
  • Open Source GnuTLS

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.7
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Early validation
CWE: CWE-179 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 312106
Nessus Name: CentOS 9 : gnutls-3.8.10-4.el9

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/09/2026 CVE reserved
04/30/2026 +51 days Advisory disclosed
04/30/2026 +0 days VulDB entry created
06/20/2026 +50 days VulDB entry last update

Sourcesinfo

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2026-3832 (🔒)
GCVE (CVE): GCVE-0-2026-3832
GCVE (VulDB): GCVE-100-360338
CERT Bund: WID-SEC-2026-1312 - GnuTLS: Mehrere Schwachstellen

Entryinfo

Created: 04/30/2026 20:14
Updated: 06/20/2026 01:33
Changes: 04/30/2026 20:14 (60), 05/01/2026 22:51 (7), 05/05/2026 10:19 (2), 06/04/2026 02:53 (1), 06/20/2026 01:33 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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