7.1

CVE-2026-91970: go-vikunja vikunja

CVSS: 7.1v4.0HighDeferred
AliasesGHSA-wq92-8x3r-fm38GO-2026-6757
Published 15-09-2026Last modified 15-09-2026
Open JSON

Vulnerability summary

CVE-2026-91970 is a high (CVSS 7.1) vulnerability in go-vikunja vikunja. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-09-2026
    PublishedVulnerability first disclosed.
  2. 15-09-2026
    Last modifiedVulnerability information updated.

Description

Vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the Planka migrator that fails to enforce aggregate memory budgets during migration jobs. Authenticated attackers can submit migration requests pointing to attacker-controlled servers advertising numerous size-compliant attachments, exhausting worker memory and causing denial of service for all users.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

+0.01 pp

From 0.37% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Code.vikunja.io1 product
  • api≥ 2.5.0, < 2.6.0 | All versions (No fix recorded)
Go-vikunja1 product

2 vendors · 2 products

References

6 links