CVE-2026-86257
Last modified
CVE-2026-86257 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. wger before 2.6 fails to sanitize first_name and last_name fields in the gym member TSV export endpoint, allowing any gym member to inject spreadsheet formulas. Attackers can inject formulas like =HYPERLINK to exfiltrate admin data or execute code when admins open the exported file in Excel or LibreOffice Calc.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
wger before 2.6 fails to sanitize first_name and last_name fields in the gym member TSV export endpoint, allowing any gym member to inject spreadsheet formulas. Attackers can inject formulas like =HYPERLINK to exfiltrate admin data or execute code when admins open the exported file in Excel or LibreOffice Calc.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| wger-project | wger | < 2.6 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-86257?
How severe is CVE-2026-86257?
How do I fix CVE-2026-86257?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-86251h3 versions before 1.15.9 contain a path traversal vulnerabi…5.9
- CVE-2026-86252h3 versions before 1.15.9 fail to sanitize carriage return c…5.3
- CVE-2026-86253h3 (npm package) versions <= 2.0.1-rc.14 contain a path trav…5.9
- CVE-2026-86254wger versions through master contain an incomplete authoriza…6.8
- CVE-2026-86255wger before 2.5 fails to validate the maximum duration of ro…6.5
- CVE-2026-86256wger before 2.6 (affected versions <= 2.5.0) contains an ope…5.4
- CVE-2026-86258nbviewer through 1.0.1 contains a path traversal vulnerabili…5.9
- CVE-2026-86259OpenMAIC before 1.0.1 skips server-side request forgery vali…7.5
- CVE-2026-8626The SponsorMe plugin for WordPress is vulnerable to Reflecte…6.1
- CVE-2026-86260A security flaw has been discovered in sfturing hosp_order u…6.5
- CVE-2026-86261A weakness has been identified in sfturing hosp_order up to …7.3
- CVE-2026-86262A security vulnerability has been detected in sfturing hosp_…7.3
Are you affected by CVE-2026-86257?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST