CVE-2026-101014 (CVSS 7.3)

Description

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.

Is your site exposed to CVE-2026-101014?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-189 CWE-189

CWE-193 CWE-193

References

Other References

https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae https://github.com/trusteddomainproject/OpenDMARC/pull/188 https://github.com/trusteddomainproject/OpenDMARC/pull/344 https://vuldb.com/cve/CVE-2026-101014 https://vuldb.com/submit/917100 https://vuldb.com/vuln/410884 https://vuldb.com/vuln/410884/cti https://weitongli.com/share/opendmarc-cleanup-off-by-one.html

Frequently Asked Questions

What is CVE-2026-101014? +

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-101014? +

CVE-2026-101014 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0031, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-101014? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-82908 8.8

A vulnerability was found in MSI Dragon Center up to 2.0.155.0. Affected by this vulnerability is the function MmioWritePath in …

CVE-2026-86297 8.1

A vulnerability was identified in D-Link DIR-605 B1v202WWB03. This issue affects the function tunnel_set_params of the file progs.gpl/pppd.alpha/l2tp/tunnel.c of the …

CVE-2026-82480 7.4

A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of …

CVE-2026-90593 7.3

A vulnerability was determined in embedded-graphics up to 0.8.2. This affects the function ImageRaw::draw_sub_image of the file src/image/image_raw.rs. Executing a …

CVE-2026-90715 7.3

A security vulnerability has been detected in marcobambini Gravity up to 0.9.7. This affects an unknown function of the file …

CVE-2026-7598 7.3

A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the …

CVE-2026-101014