CVE-2026-65900

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (21st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

DOMPurify versions >=3.0.0 and before 3.4.8, when configured with SAFE_FOR_TEMPLATES together with a DOM output mode (RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE), fail to strip template expressions (e.g. ${evil}, {{evil}}, <%evil%>) inside element content. The final normalization/scrub pass (_scrubTemplateExpressions) uses a NodeIterator and node.normalize() that do not descend into template.content, so expressions that only form after adjacent text nodes merge survive sanitization. This bypasses SAFE_FOR_TEMPLATES and can allow a downstream template engine to evaluate attacker-supplied expressions. The string output path is not affected.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 23, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

DOMPurify before 3.4.8 Template Expression Injection via RETURN_DOM | Advisories | VulnCheck

https://www.vulncheck.com/advisories/dompurify-before-template-expression-injection-via-return-dom
githubMentions a patch (unverified)🟡 PoC Available

SAFE_FOR_TEMPLATES bypass - template expressions survive sanitization inside <template> content when using DOM output modes · Advisory · cure53/DOMPurify · GitHub

https://github.com/cure53/DOMPurify/security/advisories/GHSA-gvmj-g25r-r7wr

Vendor Advisories for CVE-2026-65900(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-dompurify2.4.1+dfsg+~2.4.0-1 ... 3.4.5+dfsg-1 (18 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-dompurify3.1.7+dfsg+~3.0.5-2 ... 3.4.5+dfsg-1 (12 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-dompurify3.1.7+dfsg+~3.0.5-2 ... 3.4.5+dfsg-1 (8 versions)
  • every version up to 3.4.12+dfsg-1: fixed in 3.4.12+dfsg-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
dompurify—
  • 3.0.0 up to 3.4.8: fixed in 3.4.8
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
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  1. 2026-09-16 06:48 UTCEG score recompute
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  3. 2026-09-13 22:23 UTCEG score recompute
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  6. 2026-09-11 14:53 UTCEPSS rescore
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  26. 2026-08-26 14:47 UTCEPSS rescore
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  37. 2026-08-18 13:48 UTCEPSS rescore
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  39. 2026-08-17 13:47 UTCEPSS rescore
  40. 2026-08-16 14:56 UTCEPSS rescore
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  43. 2026-08-15 01:30 UTCEPSS rescore
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  45. 2026-08-13 22:00 UTCEPSS rescore
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  72. 2026-07-28 15:37 UTCEPSS rescore
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  74. 2026-07-27 14:14 UTCEPSS rescore
  75. 2026-07-27 04:24 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-65900?
CVE-2026-65900 is a medium vulnerability published on July 23, 2026. DOMPurify versions >=3.0.0 and before 3.4.8, when configured with SAFEFORTEMPLATES together with a DOM output mode (RETURNDOM, RETURNDOMFRAGMENT, or INPLACE), fail to strip template expressions (e.g. ${evil}, {{evil}}, <%evil%>) inside <template> element content. The final normalization/scrub pass…
When was CVE-2026-65900 disclosed?
CVE-2026-65900 was first published on July 23, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65900 actively exploited?
CVE-2026-65900 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-65900?
CVE-2026-65900 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-65900?
A fix for CVE-2026-65900 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-65900 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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