CVE-2026-80200

MEDIUMPre-NVD 4.74.7
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 4.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
4.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Kimai before 2.53.0 contains an open redirect vulnerability in the SAML authentication success handler that accepts unvalidated RelayState POST parameters as redirect destinations. Attackers with IdP access can supply malicious RelayState values to redirect authenticated users to attacker-controlled URLs for credential theft or phishing attacks.

CVSS v3
4.7
EG Score
4.7MEDIUMmedium confidence
EG Risk
36
EG Risk 36/100

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)
Severity47% × 45%
The EG Score, 4.7 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 28, 2026
Patch available. Sources: github.
Web page

Kimai before 2.53.0 Open Redirect via RelayState | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kimai-before-2.53.0-open-redirect-via-relaystate
GitHub advisoryMentions a patch (unverified)

Open Redirect via Unvalidated RelayState in SAML ACS Handler · Advisory · kimai/kimai · GitHub

https://github.com/kimai/kimai/security/advisories/GHSA-3jp4-mhh4-gcgr

Vendor Advisories for CVE-2026-80200(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 (198 versions)
  • every version up to 2.53.0: fixed in 2.53.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 83× 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 139 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 41 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% · 27th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  3. 2026-10-12 14:57 UTCEG score recompute
  4. 2026-10-11 19:21 UTCEG score recompute
  5. 2026-10-11 16:37 UTCEG score recompute
  6. 2026-10-11 13:56 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  9. 2026-10-10 10:00 UTCEG score recompute
  10. 2026-10-10 10:00 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  13. 2026-10-08 16:35 UTCEG score recompute
  14. 2026-10-08 16:35 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  15. 2026-10-08 15:41 UTCEG score recompute
  16. 2026-10-08 15:41 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  17. 2026-10-08 02:15 UTCEG score recompute
  18. 2026-10-08 02:15 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  20. 2026-10-07 00:17 UTCEG score recompute
  21. 2026-10-07 00:17 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  23. 2026-10-06 01:50 UTCEG score recompute
  24. 2026-10-06 01:50 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  25. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 27th percentile
Show 73 more
  1. 2026-10-05 01:50 UTCEG score recompute
  2. 2026-10-05 01:50 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  3. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  4. 2026-10-04 03:24 UTCEG score recompute
  5. 2026-10-04 03:24 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  6. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  7. 2026-10-03 04:57 UTCEG score recompute
  8. 2026-10-03 04:57 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  9. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  10. 2026-10-02 06:24 UTCEG score recompute
  11. 2026-10-02 06:24 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  12. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  13. 2026-10-01 05:34 UTCEG score recompute
  14. 2026-10-01 05:34 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  15. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  16. 2026-09-30 06:19 UTCEG score recompute
  17. 2026-09-30 06:19 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  18. 2026-09-28 21:24 UTCEG score recompute
  19. 2026-09-28 21:24 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  20. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  21. 2026-09-27 19:56 UTCEG score recompute
  22. 2026-09-27 19:56 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  24. 2026-09-26 21:29 UTCEG score recompute
  25. 2026-09-26 21:29 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  26. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  27. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  28. 2026-09-25 01:23 UTCEG score recompute
  29. 2026-09-25 01:23 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  30. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  31. 2026-09-24 02:56 UTCEG score recompute
  32. 2026-09-24 02:56 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  33. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-09-23 04:30 UTCEG score recompute
  35. 2026-09-23 04:30 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  36. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-09-22 06:03 UTCEG score recompute
  38. 2026-09-22 06:03 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  39. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-09-21 07:37 UTCEG score recompute
  41. 2026-09-21 07:37 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  42. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-09-20 08:35 UTCEG score recompute
  44. 2026-09-20 08:35 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  45. 2026-09-19 10:05 UTCEG score recompute
  46. 2026-09-19 10:05 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  47. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-09-18 11:39 UTCEG score recompute
  49. 2026-09-18 11:39 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  50. 2026-09-17 13:07 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  51. 2026-09-16 14:11 UTCEG score recompute
  52. 2026-09-16 14:11 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  53. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-09-15 15:10 UTCEG score recompute
  56. 2026-09-15 15:10 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  57. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  58. 2026-09-14 16:29 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  59. 2026-09-13 17:59 UTCEG score recompute
  60. 2026-09-13 17:59 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  61. 2026-09-12 19:32 UTCEG score recompute
  62. 2026-09-12 19:32 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  63. 2026-09-11 21:05 UTCEG score recompute
  64. 2026-09-11 21:05 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  65. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  66. 2026-09-10 22:38 UTCEG score recompute
  67. 2026-09-10 22:38 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  68. 2026-09-10 00:11 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  69. 2026-09-09 00:55 UTCEG score recompute
  70. 2026-09-09 00:55 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  71. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-09-07 15:13 UTCGHSA enrichmentGHSA-wv9h-9jv8-rqm9 · GitHub severity LOW
  73. 2026-09-06 14:25 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-80200?
CVE-2026-80200 is a medium-severity vulnerability; its CVE record was published on August 25, 2026. Kimai before 2.53.0 contains an open redirect vulnerability in the SAML authentication success handler that accepts unvalidated RelayState POST parameters as redirect destinations. Attackers with IdP access can supply malicious RelayState values to redirect authenticated users to…
When was CVE-2026-80200 made public?
CVE-2026-80200 was made public on April 11, 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-2026-80200 actively exploited?
CVE-2026-80200 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80200?
CVE-2026-80200 has a CVSS base score of 4.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-80200?
A fix for CVE-2026-80200 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80200 are linked in the Vendor Advisories panel on this page.

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