CVE-2026-80202

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

Score 8.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-31. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Kimai before 2.56.0 does not enforce team-membership checks in TimesheetVoter::voteOnAttribute(), which maps permissions only to own_timesheet or other_timesheet. As a result, any authenticated user with ROLE_TEAMLEAD (or a role holding edit_other_timesheet/delete_other_timesheet) can read, modify, and permanently delete timesheets belonging to any user system-wide via the API, regardless of team membership. Timesheet IDs are sequential integers and trivially enumerable. ROLE_USER accounts are correctly restricted. (Note: the maintainers characterize this behavior as matching the documented permission model.)

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

August 25, 2026

Last Modified

October 8, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
Patch available. Sources: github.
Web page

Kimai before 2.56.0 Authorization Bypass via TimesheetVoter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kimai-before-2.56.0-authorization-bypass-via-timesheetvoter
GitHub advisoryMentions a patch (unverified)

Missing Voter Check Allows Cross-Team Timesheet Manipulation · Advisory · kimai/kimai · GitHub

https://github.com/kimai/kimai/security/advisories/GHSA-9g2q-w3w2-vf7q

Vendor Advisories for CVE-2026-80202(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)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
kimai/kimai0.1 ... 2.9.0 (201 versions)
  • every version up to 2.56.0: fixed in 2.56.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 114× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 99 of 179 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 80 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-13 06:32 UTCEG score recompute
  3. 2026-10-13 06:31 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-12 14:57 UTCEG score recompute
  6. 2026-10-11 19:21 UTCEG score recompute
  7. 2026-10-11 16:37 UTCEG score recompute
  8. 2026-10-11 13:56 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  11. 2026-10-10 10:00 UTCEG score recompute
  12. 2026-10-10 10:00 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-10-09 03:40 UTCEG score recompute
  15. 2026-10-09 03:40 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-08 16:35 UTCEG score recompute
  18. 2026-10-08 16:35 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  19. 2026-10-08 15:41 UTCEG score recompute
  20. 2026-10-08 15:41 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  21. 2026-10-08 02:15 UTCEG score recompute
  22. 2026-10-08 02:15 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  23. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-10-07 11:07 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  25. 2026-10-07 00:00 UTCEG score recompute
Show 74 more
  1. 2026-10-07 00:00 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  2. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-10-06 12:55 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  4. 2026-10-06 01:50 UTCEG score recompute
  5. 2026-10-06 01:50 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  6. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-05 12:54 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  8. 2026-10-05 01:48 UTCEG score recompute
  9. 2026-10-05 01:48 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-10-04 14:43 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  12. 2026-10-04 03:38 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  13. 2026-10-03 16:32 UTCEG score recompute
  14. 2026-10-03 16:32 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-10-03 05:27 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  17. 2026-10-02 18:22 UTCEG score recompute
  18. 2026-10-02 18:22 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  19. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-10-02 07:04 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  21. 2026-10-01 19:59 UTCEG score recompute
  22. 2026-10-01 19:59 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-10-01 07:13 UTCEG score recompute
  25. 2026-10-01 07:13 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  26. 2026-09-30 20:08 UTCEG score recompute
  27. 2026-09-30 20:08 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  28. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  29. 2026-09-30 06:19 UTCEG score recompute
  30. 2026-09-30 06:19 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  31. 2026-09-29 08:29 UTCEG score recompute
  32. 2026-09-29 08:29 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  33. 2026-09-28 21:24 UTCEG score recompute
  34. 2026-09-28 21:24 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  35. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  36. 2026-09-28 06:47 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  37. 2026-09-27 19:42 UTCEG score recompute
  38. 2026-09-27 19:42 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  39. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  40. 2026-09-27 08:35 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  41. 2026-09-26 21:29 UTCEG score recompute
  42. 2026-09-26 21:29 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  43. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  44. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  45. 2026-09-25 07:10 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  46. 2026-09-24 20:04 UTCEG score recompute
  47. 2026-09-24 20:04 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  48. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  49. 2026-09-24 08:59 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  50. 2026-09-23 21:54 UTCEG score recompute
  51. 2026-09-23 21:54 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  53. 2026-09-23 10:49 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  54. 2026-09-22 23:44 UTCEG score recompute
  55. 2026-09-22 23:44 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  56. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  57. 2026-09-22 12:38 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  58. 2026-09-22 01:33 UTCEG score recompute
  59. 2026-09-22 01:33 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  60. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  61. 2026-09-21 14:28 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  62. 2026-09-21 03:16 UTCEG score recompute
  63. 2026-09-21 03:16 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  64. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  65. 2026-09-20 16:10 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  66. 2026-09-20 05:01 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  67. 2026-09-19 17:56 UTCEG score recompute
  68. 2026-09-19 17:56 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  69. 2026-09-19 06:51 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  70. 2026-09-18 19:42 UTCEG score recompute
  71. 2026-09-18 19:42 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  72. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  73. 2026-09-18 08:36 UTCGHSA enrichmentGHSA-fx95-9ppf-x8wm · GitHub severity CRITICAL · GitHub CVSS 8.8
  74. 2026-09-17 21:30 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-80202?
CVE-2026-80202 is a high-severity vulnerability; its CVE record was published on August 25, 2026. Kimai before 2.56.0 does not enforce team-membership checks in TimesheetVoter::voteOnAttribute(), which maps permissions only to owntimesheet or othertimesheet. As a result, any authenticated user with ROLETEAMLEAD (or a role holding editothertimesheet/deleteothertimesheet) can read, modify, and…
When was CVE-2026-80202 made public?
CVE-2026-80202 was made public on April 27, 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 August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-80202 actively exploited?
CVE-2026-80202 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80202?
CVE-2026-80202 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-80202?
A fix for CVE-2026-80202 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80202 are linked in the Vendor Advisories panel on this page.

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