CVE-2020-26290

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.98% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 59.6% of scored records. A rank, not a probability.

NVD base score

9.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-12-28 19:15Z5 YR AGO

Last updated

2024-08-04 15:56Z2 YR AGO

Reserved

2020-10-01

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

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

Weaknesses

• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.1

Document digest

beed2b8c99623af00dd7a137c574f87c2e4ca9b94c7ebc6ec0cb705c40dec2f7

• github.comhttps://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.mdx_refsource_MISC
• github.comhttps://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.mdx_refsource_MISC
• github.comhttps://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.mdx_refsource_MISC
• mattermost.comhttps://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/x_refsource_MISC
• github.comhttps://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5x_refsource_CONFIRM
• github.comhttps://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7x_refsource_MISC
• github.comhttps://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8x_refsource_MISC
• github.comhttps://github.com/dexidp/dex/releases/tag/v2.27.0x_refsource_MISC