A missing sanitization of search results for an autocomplete field in NextCloud Talk <3.2.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.
CVE-2018-3781
MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence
Score 5.4 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.4; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.4Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EPSS
- 45.4%
- KEV
- Not listed
Published
August 13, 2018
Last Modified
November 21, 2024
References (4)
- support@hackeronehttps://hackerone.com/reports/383117
- support@hackeronehttps://nextcloud.com/security/advisory/?id=NC-SA-2018-009
- af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/383117
- af854a3a-2127-422b-91ae-364da2661108https://nextcloud.com/security/advisory/?id=NC-SA-2018-009
Frequently asked(5)
What is CVE-2018-3781?
CVE-2018-3781 is a medium vulnerability published on August 13, 2018. A missing sanitization of search results for an autocomplete field in NextCloud Talk <3.2.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.
When was CVE-2018-3781 disclosed?
CVE-2018-3781 was first published in the National Vulnerability Database on August 13, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-3781 actively exploited?
CVE-2018-3781 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-3781?
CVE-2018-3781 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2018-3781?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-3781, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2018-3781
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