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HomeCVEsCVE-2023-5631

CVE-2023-5631

Published: January 26, 2026
Last updated:16 hours ago (January 26, 2026)
Exploit: YesZero-day: YesPatch: YesTrend: Neutral
TL;DR
Updated January 26, 2026

CVE-2023-5631 is a medium severity vulnerability with a CVSS score of 5.4. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.

Key Points
  • 1Medium severity (CVSS 5.4/10)
  • 2EPSS: 85.00% - very high likelihood of exploitation
  • 3Public exploits are available
  • 4Vendor patches are available
  • 5Strobes Priority Score: 520/1000 (Medium)
  • 6Affects products from: Debian, Roundcube, Fedoraproject
Severity Scores
CVSS v35.4
CVSS v20.0
Priority Score520.0
EPSS Score85.0
Medium
Exploitation LikelihoodCritical
85.00%EPSS

Very high probability of exploitation in the next 30 days

Immediate patching required
85.00%
EPSS
5.4
CVSS
Yes
Exploit
Yes
Patch
High Priority
high EPSS • exploit exists

EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.

Description

Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.

CVSS v3 Breakdown
Attack Vector:Network
Attack Complexity:Local
Privileges Required:Local
User Interaction:Required
Scope:Changed
Confidentiality:Local
Integrity:Local
Availability:Network
Exploit References
Cisa.gov[email protected]Proofpoint Emerging Threats
Patch References
Github.comGithub.comGithub.comGithub.comGithub.com[email protected]Zeroday CZ
Trend Analysis
Neutral
Vulnerable Products
VendorProduct
DebianDebian Linux
RoundcubeWebmail
FedoraprojectFedora
Advisories
CISA: Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.
GitHub AdvisoryNVD
Cite This Page
APA Format
Strobes VI. (2026). CVE-2023-5631 - CVE Details and Analysis. Strobes VI. Retrieved January 27, 2026, from https://vi.strobes.co/cve/CVE-2023-5631
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