CVE-2026-123523: high-severity vulnerability in go-vikunja vikunja
Vikunja before 2.7.1 Memory Exhaustion via Unbounded Avatar Size Cache
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
go-vikunja · vikunjaRelated CVEs — go-vikunja vikunja
In the same product, most dangerous first.
CVE-2026-33336MEDIUMVikunja Desktop vulnerable to Remote Code Execution via same-window navigationEPSS 1.2%CVE-2026-27819HIGHVikunja has Path Traversal in CLI RestoreEPSS 0.8%CVE-2026-28268CRITICALVikunja Vulnerable to Account Takeover via Password Reset Token ReuseEPSS 0.7%CVE-2026-91973HIGHVikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuthEPSS 0.7%CVE-2026-91972HIGHVikunja before 2.6.0 Authentication Bypass via Unthrottled APIEPSS 0.6%CVE-2026-27616HIGHVikunja Vulnerable to Stored Cross-Site Scripting (XSS) via Unsanitized SVG Attachment Upload Leading to Token ExposureEPSS 0.5%