CVEvulnerability
CVE-2026-100891
5.5 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-28
- Last modified
- 2026-10-01
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.5 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-172
Description
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Related
Weakness · CWE (1)
- CWE-172 Improper Encoding or Decoding of Data weakness
References
- https://vuldb.com/cve/CVE-2026-100891 vuldb.com
- https://vuldb.com/submit/917215 vuldb.com
- https://vuldb.com/vuln/410841 vuldb.com
- https://vuldb.com/vuln/410841/cti vuldb.com
- https://weitongli.com/share/opendmarc-ulabel-not-converted.html weitongli.com