CVE-2026-75838: cure53 dompurify Cross-site Scripting
CVSS: 5.1v4.0MediumAwaiting analysis
AliasesRHSA-2026:70917RHSA-2026:70994UBUNTU-CVE-2026-75838DEBIAN-CVE-2026-75838GHSA-55q2-fjhq-7xh7
Published 18-08-2026Last modified 18-08-2026
Vulnerability summary
CVE-2026-75838 is a medium (CVSS 5.1) Cross-site Scripting vulnerability in cure53 dompurify. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.3% of scored vulnerabilities.
CVSS score
5.1/10
010
Medium · v4.0 (CVE.org)EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 3Timeline
- 18-08-2026PublishedVulnerability first disclosed.
- 18-08-2026Last modifiedVulnerability information updated.
Description
DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.
CVSS metrics
6 scores · 6 sources · 2 versionsMedium 5.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:NSourcesAll 5 agree
- OSV · UbuntuEcosystem advisory · calculated5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- OSV · DebianEcosystem advisory · calculated5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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
- OSV · NpmEcosystem advisory · calculated5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- NVDNIST5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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
Medium 6.1Preferred score · OSV · Red hat (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesSingle source
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
0.00 pp
From 0.30% on 20-09-2026
20-09-202620-10-2026
EPSS score0.30%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat2 products
- grafana12.4< 0:12.4.10-0.7.hum1
- grafana13.2< 0:13.2.1-0.6.hum1
Cure531 product
- dompurify< 3.4.13
Debian1 product
- node-dompurifyAll versions (No fix recorded) | < 3.4.13+dfsg-1
Npm1 product
- dompurify< 3.4.13
Ubuntu1 product
- node-dompurifyAll versions (No fix recorded)
5 vendors · 6 products
References
18 links- www.vulncheck.com/advisories/dompurify-before-cross-site-scripting-via-in-place-hookThird Party AdvisoryARTICLE
- images.redhat.comARTICLE
Show all 18 references
- github.com/cure53/DOMPurifyPACKAGE