Trusted Domain Project OpenDKIM up to 2.11.0 Tag Tokenizer dkim.c dkim_process_set less trusted source

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. This affects the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Executing a manipulation can lead to less trusted source. The identification of this vulnerability is CVE-2026-101277. The attack may be launched remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Trusted Domain Project OpenDKIM up to 2.11.0 and classified as critical. This vulnerability affects the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. The manipulation with an unknown input leads to a less trusted source vulnerability. The CWE definition for the vulnerability is CWE-348. The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack. As an impact it is known to affect integrity, and availability.

The advisory is available at xuyongzhe-vt.github.io. This vulnerability was named CVE-2026-101277. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at xuyongzhe-vt.github.io. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

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

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

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Less trusted source
CWE: CWE-348
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/28/2026 Advisory disclosed
09/28/2026 +0 days VulDB entry created
09/28/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: xuyongzhe-vt.github.io
Status: Not defined

CVE: CVE-2026-101277 (🔒)
GCVE (CVE): GCVE-0-2026-101277
GCVE (VulDB): GCVE-100-411034
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/28/2026 13:57
Changes: 09/28/2026 13:57 (57)
Complete: 🔍
Submitter: yongzhe_xu
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #918270: The Trusted Domain Project OpenDKIM 2.11.0 Improper Input Validation (by yongzhe_xu)

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