CVE-2026-44990 (GCVE-0-2026-44990)
Vulnerability from cvelistv5 – Published: 2026-06-12 20:39 – Updated: 2026-09-10 12:05
VLAI
EPSS
VEX
Title
Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html`
Summary
ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Under the default configuration, versions of `sanitize-html` prior to 2.17.4 can turn attacker-controlled content inside a disallowed `xmp` element into live HTML or JavaScript. This is a sanitizer bypass in the default `disallowedTagsMode: 'discard'` path and can lead to stored XSS in applications that render sanitized output back to users. Version 2.17.4 patches the issue.
Severity
9.3 (Critical)
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-15 13:04 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
31 references
Impacted products
31 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| apostrophecms | sanitize-html |
Affected:
< 2.17.4
|
guessed | |
| Red Hat | multicluster engine for Kubernetes 2.1 |
Unaffected:
1784312384 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.10::el9 |
||
| Red Hat | multicluster engine for Kubernetes 2.11 |
Unaffected:
1786911977 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.11::el9 |
||
| Red Hat | multicluster engine for Kubernetes 2.17 |
Unaffected:
1786668856 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.17::el9 |
||
| Red Hat | multicluster engine for Kubernetes 2.6 |
Unaffected:
1783351002 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.6::el9 |
||
| Red Hat | multicluster engine for Kubernetes 2.8 |
Unaffected:
1785078604 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.8::el9 |
||
| Red Hat | multicluster engine for Kubernetes 2.9 |
Unaffected:
1783348181 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.9::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 |
Unaffected:
1783350952 , < *
(rpm)
cpe:/a:redhat:acm:2.11::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 |
Unaffected:
1785078581 , < *
(rpm)
cpe:/a:redhat:acm:2.13::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 |
Unaffected:
1783451729 , < *
(rpm)
cpe:/a:redhat:acm:2.14::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 |
Unaffected:
1784578812 , < *
(rpm)
cpe:/a:redhat:acm:2.15::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 |
Unaffected:
1786908361 , < *
(rpm)
cpe:/a:redhat:acm:2.16::el9 |
||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 |
Unaffected:
1787335105 , < *
(rpm)
cpe:/a:redhat:acm:2.17::el9 |
||
| Red Hat | Red Hat Container Native Virtualization 4.19 |
Unaffected:
1784844382 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.19::el9 |
||
| Red Hat | Red Hat Container Native Virtualization 4.20 |
Unaffected:
1784629964 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.20::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.20 |
Unaffected:
1788350963 , < *
(rpm)
cpe:/a:redhat:openshift:4.20::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.21 |
Unaffected:
1788359934 , < *
(rpm)
cpe:/a:redhat:openshift:4.21::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.22 |
Unaffected:
1787746382 , < *
(rpm)
cpe:/a:redhat:openshift:4.22::el9 |
||
| Red Hat | Red Hat OpenShift Dev Spaces 3.29 |
Unaffected:
1784737150 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.29::el9 |
||
| Red Hat | Red Hat Quay 3.10 |
Unaffected:
1783750447 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
||
| Red Hat | Red Hat Quay 3.12 |
Unaffected:
1783751865 , < *
(rpm)
Unaffected: 1784353904 , < * (rpm) cpe:/a:redhat:quay:3.12::el8 |
||
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1784351966 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
||
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1783955846 , < *
(rpm)
cpe:/a:redhat:quay:3.16::el9 |
||
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1784125838 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
||
| Red Hat | Red Hat Satellite 6.18 |
Unaffected:
1785922764 , < *
(rpm)
cpe:/a:redhat:satellite:6.18::el9 |
||
| Red Hat | Red Hat Satellite 6.19 |
Unaffected:
1785956497 , < *
(rpm)
cpe:/a:redhat:satellite:6.19::el9 |
||
| Red Hat | Red Hat Satellite 6.19 |
Unaffected:
1785937325 , < *
(rpm)
cpe:/a:redhat:satellite:6.19::el9 |
||
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
||
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
||
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
||
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6
|
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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