Trusted Domain Project OpenDMARC up to 1.4.2 PSL Wildcard opendmarc_tld.c : opendmarc_get_tld origin validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k1.05-

Summaryinfo

A vulnerability identified as problematic has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. The manipulation leads to origin validation. This vulnerability is referenced as CVE-2026-101278. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Trusted Domain Project OpenDMARC up to 1.4.2 and classified as problematic. This issue affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. The manipulation with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is integrity.

It is possible to read the advisory at xuyongzhe-vt.github.io. The identification of this vulnerability is CVE-2026-101278. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known.

The exploit is available 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.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

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: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
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-2026-101278 (🔒)
GCVE (CVE): GCVE-0-2026-101278
GCVE (VulDB): GCVE-100-411035
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/28/2026 13:58
Changes: 09/28/2026 13:58 (57)
Complete: 🔍
Submitter: yongzhe_xu
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #918273: The Trusted Domain Project OpenDMARC 1.4.2 Improper Authentication (by yongzhe_xu)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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