CVE-2026-75592

MEDIUMPre-NVD 6.96.9
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (52nd 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

Also known asEUVD-2026-68811 (ENISA EUVD) · GHSA-6j4c-mgqr-qv76 (GitHub Security Advisories)Source: ENISA EUVD

6.9EG
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: 0.7%CVSS: 6.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler used incomplete filesystem containment checks in src/Filesystem/Dir.php and src/Filesystem/F.php through Kirby\Filesystem\Dir::realpath() and Kirby\Filesystem\F::realpath(). The checks accepted a sibling directory whose path shared the intended root's string prefix, such as /var/www/site2 next to /var/www/site, because they did not require an exact match or a DIRECTORY_SEPARATOR boundary. A remote attacker could use Kirby\Cms\Media::thumb() to create and access thumbnails from image files in a PHP-readable sibling directory when that directory contained a valid .json thumbnail job file, potentially exposing staging sites, backups, or other internal sites and deleting the job file during processing. This issue is fixed in versions 4.9.5 and 5.5.2.

CVSS
6.9
EG Score
6.9MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity69% × 45%
Impact severity (EG Severity): CVSS 6.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.7% × 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
0.7%
EPSS %ILE
52nd
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 (6.9): severity, escalated by confirmed exploitation. This CVE's 6.9 is its impact severity (EG Severity), not escalated.

EG Severity
6.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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

August 31, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Aug 31, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

5.5.2

Patch available: getkirby/kirby 5.5.2

https://github.com/getkirby/kirby/releases/tag/5.5.2
GitHub release Patch Available

4.9.5

Patch available: getkirby/kirby 4.9.5

https://github.com/getkirby/kirby/releases/tag/4.9.5
GitHub commit Patch Available

commit e0dca5f709ad (getkirby/kirby)

Patch available: getkirby/kirby 5.5.2 (contains commit e0dca5f709ad)

https://github.com/getkirby/kirby/commit/e0dca5f709adc21b36f5549df2c0619bc59da56c
GitHub commit Patch Available

commit 2b6fab950bc8 (getkirby/kirby)

Patch available: getkirby/kirby 4.9.5 (contains commit 2b6fab950bc8)

https://github.com/getkirby/kirby/commit/2b6fab950bc89d505ea89576bf71c8de614cc3b2
GitHub advisoryMentions a patch (unverified)

Access to image files outside of the site root via path traversal in the media handling · Advisory · getkirby/kirby · GitHub

https://github.com/getkirby/kirby/security/advisories/GHSA-6j4c-mgqr-qv76

Vendor Advisories for CVE-2026-75592(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
composergetkirby/cms @ 4.9.5 (fixes < 4.9.5)—ghsa
composergetkirby/cms @ 5.5.2 (fixes >= 5.0.0, < 5.5.2)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
getkirby/cms5.0.0 ... 5.5.1 (28 versions)
  • every version up to 4.9.5: fixed in 4.9.5
  • 5.0.0 up to 5.5.2: fixed in 5.5.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 → 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.

Showing the most recent 100 of 114 rows 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. None are among the latest 100 rows. The 14 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  5. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  6. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  7. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  8. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  9. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  11. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  12. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  13. 2026-11-01 07:39 UTCGHSA enrichmentGHSA-6j4c-mgqr-qv76 · GitHub severity MODERATE
  14. 2026-11-01 07:39 UTCEchelonGraph re-scored
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  16. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  17. 2026-10-30 06:25 UTCOSV refresh
  18. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  19. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  22. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  23. 2026-10-25 14:02 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  25. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
Show 75 more
  1. 2026-10-22 18:57 UTCEchelonGraph re-scored
  2. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  3. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  4. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  5. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  7. 2026-10-18 03:13 UTCEchelonGraph re-scored
  8. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  9. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  10. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  11. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  12. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  13. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  14. 2026-10-12 15:39 UTCEchelonGraph re-scored
  15. 2026-10-11 19:24 UTCEchelonGraph re-scored
  16. 2026-10-11 16:40 UTCEchelonGraph re-scored
  17. 2026-10-11 13:59 UTCEchelonGraph re-scored
  18. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  20. 2026-10-10 05:09 UTCEchelonGraph re-scored
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  22. 2026-10-09 05:43 UTCEchelonGraph re-scored
  23. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  24. 2026-10-08 06:15 UTCEchelonGraph re-scored
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  26. 2026-10-07 06:49 UTCEchelonGraph re-scored
  27. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  28. 2026-10-06 07:23 UTCEchelonGraph re-scored
  29. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  30. 2026-10-05 04:28 UTCEchelonGraph re-scored
  31. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  32. 2026-10-04 05:02 UTCEchelonGraph re-scored
  33. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  34. 2026-10-03 05:37 UTCEchelonGraph re-scored
  35. 2026-10-02 06:11 UTCEchelonGraph re-scored
  36. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  37. 2026-10-01 04:24 UTCEchelonGraph re-scored
  38. 2026-09-30 04:58 UTCEchelonGraph re-scored
  39. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  40. 2026-09-29 05:32 UTCEchelonGraph re-scored
  41. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  42. 2026-09-28 06:05 UTCEchelonGraph re-scored
  43. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  44. 2026-09-27 06:40 UTCEchelonGraph re-scored
  45. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  46. 2026-09-26 07:08 UTCEchelonGraph re-scored
  47. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  48. 2026-09-24 19:16 UTCEchelonGraph re-scored
  49. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  50. 2026-09-23 19:50 UTCEchelonGraph re-scored
  51. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  52. 2026-09-22 19:10 UTCEchelonGraph re-scored
  53. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  54. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  55. 2026-09-20 20:18 UTCEchelonGraph re-scored
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  57. 2026-09-19 20:53 UTCEchelonGraph re-scored
  58. 2026-09-18 21:26 UTCEchelonGraph re-scored
  59. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  60. 2026-09-17 20:54 UTCEchelonGraph re-scored
  61. 2026-09-16 21:29 UTCEchelonGraph re-scored
  62. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  64. 2026-09-15 21:02 UTCEchelonGraph re-scored
  65. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  66. 2026-09-13 22:10 UTCEchelonGraph re-scored
  67. 2026-09-12 22:44 UTCEchelonGraph re-scored
  68. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  69. 2026-09-11 23:18 UTCEchelonGraph re-scored
  70. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  71. 2026-09-10 23:08 UTCEchelonGraph re-scored
  72. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  73. 2026-09-09 23:42 UTCEchelonGraph re-scored
  74. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  75. 2026-09-08 11:01 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-75592?
CVE-2026-75592 is a medium-severity vulnerability; its CVE record was published on August 31, 2026. Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler used incomplete filesystem containment checks in src/Filesystem/Dir.php and src/Filesystem/F.php through Kirby\Filesystem\Dir::realpath() and…
When was the CVE record for CVE-2026-75592 published?
The CVE record for CVE-2026-75592 was published on August 31, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-75592 actively exploited?
CVE-2026-75592 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75592?
CVE-2026-75592 has a CVSS base score of 6.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75592?
A fix for CVE-2026-75592 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75592 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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