GCVE-1988-2026-0036
Vulnerability from gna-1988 – Published: 2026-09-07 13:20 – Updated: 2026-09-09 10:11
VLAI
EPSS
VEX
Title
CVE-2026-78331 / CVE-2026-78332: Multiple Vulnerabilities in NethServer
Summary
Two stored XSS vulnerabilities have been disclosed in the NethServer WebTop module, affecting versions 1.5.6 and
earlier.
CVE-2026-78331 (CVSS 4.0: 8.7) affects the calendar component, while CVE-2026-78332 (CVSS 4.0: 8.2) affects the
contacts component.
Both vulnerabilities allow malicious content to be stored and JavaScript code to be executed when the affected calendar
event or contact is viewed by another user.
Affected versions:
WebTop <= 1.5.6
Fixed version:
WebTop 1.5.7
Credits:
Vulnerability discovered by Andrea Intilangelo
References:
https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-nethserver
https://github.com/NethServer/ns8-webtop/security/advisories/GHSA-cqcv-5f3w-wpmr
https://github.com/NethServer/ns8-webtop/security/advisories/GHSA-7vf9-f3rc-vg3x
_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cve | CVE-2026-78331 / CVE-2026-78332 |
Affected:
unknown
|
guessed |
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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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