CVE-2026-80197

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

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

Score 4.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-31. A secondary CVSS source baseline 4.3; 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 week
4.3EG
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: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their timesheet identifier, enabling cross-user business-state tampering without administrative privileges.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100

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)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0.3% × 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
0.3%
EPSS %ILE
16th
KEV
Not listed

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.

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

August 25, 2026

Last Modified

October 8, 2026

Advisory Details (2)

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

Kimai before 2.57.0 Improper Authorization via Favorite Endpoints | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kimai-before-2.57.0-improper-authorization-via-favorite-endpoints
GitHub advisoryMentions a patch (unverified)

Improper Authorization in Kimai Favorite Timesheet Add and Remove Endpoints Allows Cross-User Bookmark Manipulation · Advisory · kimai/kimai · GitHub

https://github.com/kimai/kimai/security/advisories/GHSA-j5mc-p8qg-39j7

Vendor Advisories for CVE-2026-80197(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 (202 versions)
  • every version up to 2.57.0: fixed in 2.57.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 82× 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 98 of 127 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 29 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:21 UTCEG score recompute
  2. 2026-10-11 16:37 UTCEG score recompute
  3. 2026-10-11 13:56 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  6. 2026-10-10 10:00 UTCEG score recompute
  7. 2026-10-10 10:00 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  9. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  10. 2026-10-08 16:35 UTCEG score recompute
  11. 2026-10-08 16:35 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  12. 2026-10-08 15:41 UTCEG score recompute
  13. 2026-10-08 15:41 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  14. 2026-10-08 02:15 UTCEG score recompute
  15. 2026-10-08 02:15 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  17. 2026-10-06 23:41 UTCEG score recompute
  18. 2026-10-06 23:41 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  20. 2026-10-06 01:50 UTCEG score recompute
  21. 2026-10-06 01:50 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  23. 2026-10-04 23:59 UTCEG score recompute
  24. 2026-10-04 23:59 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 16th percentile
Show 73 more
  1. 2026-10-04 02:07 UTCEG score recompute
  2. 2026-10-04 02:07 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  3. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  4. 2026-10-03 01:33 UTCEG score recompute
  5. 2026-10-03 01:33 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  6. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  7. 2026-10-02 03:39 UTCEG score recompute
  8. 2026-10-02 03:39 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  9. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  10. 2026-10-01 04:13 UTCEG score recompute
  11. 2026-10-01 04:13 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  12. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  13. 2026-09-30 06:19 UTCEG score recompute
  14. 2026-09-30 06:19 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  15. 2026-09-28 21:24 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  16. 2026-09-27 19:29 UTCEG score recompute
  17. 2026-09-27 19:29 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  19. 2026-09-26 21:29 UTCEG score recompute
  20. 2026-09-26 21:29 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  22. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  23. 2026-09-25 12:30 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  24. 2026-09-24 14:38 UTCEG score recompute
  25. 2026-09-24 14:38 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  26. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  27. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  28. 2026-09-23 16:42 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  29. 2026-09-22 18:51 UTCEG score recompute
  30. 2026-09-22 18:51 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  31. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  32. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  33. 2026-09-21 20:47 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  34. 2026-09-20 22:56 UTCEG score recompute
  35. 2026-09-20 22:56 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  36. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  37. 2026-09-20 01:04 UTCEG score recompute
  38. 2026-09-20 01:04 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  39. 2026-09-19 03:07 UTCEG score recompute
  40. 2026-09-19 03:07 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  41. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  42. 2026-09-18 05:15 UTCEG score recompute
  43. 2026-09-18 05:15 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  44. 2026-09-17 07:23 UTCEG score recompute
  45. 2026-09-17 07:23 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  46. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  47. 2026-09-16 09:32 UTCEG score recompute
  48. 2026-09-16 09:32 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  49. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  50. 2026-09-15 11:40 UTCEG score recompute
  51. 2026-09-15 11:40 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  52. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  53. 2026-09-14 13:48 UTCEG score recompute
  54. 2026-09-14 13:48 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  55. 2026-09-13 15:57 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  56. 2026-09-12 18:06 UTCEG score recompute
  57. 2026-09-12 18:06 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  58. 2026-09-11 20:12 UTCEG score recompute
  59. 2026-09-11 20:12 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  60. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  61. 2026-09-10 22:03 UTCEG score recompute
  62. 2026-09-10 22:02 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  63. 2026-09-10 00:11 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  64. 2026-09-09 01:58 UTCEG score recompute
  65. 2026-09-09 01:58 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  66. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  67. 2026-09-08 04:06 UTCEG score recompute
  68. 2026-09-08 04:06 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  69. 2026-09-07 06:14 UTCEG score recompute
  70. 2026-09-07 06:14 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3
  71. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  72. 2026-09-06 08:19 UTCEG score recompute
  73. 2026-09-06 08:19 UTCGHSA enrichmentGHSA-h76h-mxwq-v9xp · GitHub severity HIGH · GitHub CVSS 4.3

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-80197?
CVE-2026-80197 is a medium-severity vulnerability; its CVE record was published on August 25, 2026. Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their…
When was CVE-2026-80197 made public?
CVE-2026-80197 was made public on May 29, 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-2026-80197 actively exploited?
CVE-2026-80197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80197?
CVE-2026-80197 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-80197?
A fix for CVE-2026-80197 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80197 are linked in the Vendor Advisories panel on this page.

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