CVE-2026-111918

MEDIUMPre-NVD 5.45.4
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 5.4 from GitHub Security Advisory (severity: MODERATE) published 2026-10-17. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-103303 (ENISA EUVD) · GHSA-mjqg-gwhm-xr66 (GitHub Security Advisories) · GO-2026-6731 (OSV.dev)Source: ENISA EUVD

5.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Vikunja from 1.0.0-rc0 before 2.7.0 contains an improper authorization vulnerability in RecalculateTaskPositions that allows authenticated users with zero accessible projects to write task_positions rows for all tasks instance-wide. Attackers can delete their Inbox after repointing default_project_id, then create empty-filter saved filters to persist cross-tenant references and amplify writes for denial of service.

CVSS v3
5.4
EG Score
5.4MEDIUMhigh confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity54% × 45%
Impact severity (EG Severity): CVSS 5.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.4): severity, escalated by confirmed exploitation. This CVE's 5.4 is its impact severity (EG Severity), not escalated.

EG Severity
5.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 17, 2026

Last Modified

October 19, 2026

Advisory Details (2)

Auto-updated Oct 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
Web page

Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter Creation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vikunja-1.0.0-rc0-before-2.7.0-cross-tenant-task-position-writes-via-saved-filter-creation
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Saved filter creation with an empty filter string recalculates task positions across all tenants · Advisory · go-vikunja/vikunja · GitHub

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fprf-r6rv-xg99

Vendor Advisories for CVE-2026-111918(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
code.vikunja.io/api—
  • 1.0.0-rc0 up to 2.7.0: fixed in 2.7.0
  • every version on: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-11-11 06:41 UTCEchelonGraph re-scored
  5. 2026-11-11 06:41 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub severity MODERATE · GitHub CVSS 5.4
  6. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  7. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  11. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  12. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-11-04 01:39 UTCEchelonGraph re-scored
  14. 2026-11-04 01:39 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub severity MODERATE · GitHub CVSS 5.4
  15. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-10-29 14:41 UTCEchelonGraph re-scored
  21. 2026-10-29 14:41 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub CVSS 5.4
  22. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-10-28 13:55 UTCOSV refresh
  24. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
Show 17 more
  1. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-25 14:51 UTCEchelonGraph re-scored
  3. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-10-19 21:50 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub CVSS 5.4
  8. 2026-10-19 17:35 UTCEchelonGraph re-scored
  9. 2026-10-19 17:34 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub CVSS 5.4
  10. 2026-10-19 16:49 UTCEchelonGraph re-scored
  11. 2026-10-19 16:49 UTCGHSA enrichmentGHSA-mjqg-gwhm-xr66 · GitHub CVSS 5.4
  12. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-18 05:05 UTCEchelonGraph re-scored
  15. 2026-10-17 19:27 UTCEchelonGraph re-scored
  16. 2026-10-17 18:55 UTCEchelonGraph re-scoredFirst assessed: 5.4 MEDIUM
  17. 2026-10-17 18:54 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-111918?
CVE-2026-111918 is a medium-severity vulnerability; its CVE record was published on October 17, 2026. Vikunja from 1.0.0-rc0 before 2.7.0 contains an improper authorization vulnerability in RecalculateTaskPositions that allows authenticated users with zero accessible projects to write task_positions rows for all tasks instance-wide. Attackers can delete their Inbox after repointing…
When was CVE-2026-111918 made public?
CVE-2026-111918 was made public on October 3, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 17, 2026. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-111918 actively exploited?
CVE-2026-111918 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-111918?
CVE-2026-111918 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-111918?
A fix for CVE-2026-111918 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-111918 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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