CVE-2026-34415

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-22. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Weaponized
9.8EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, public exploit)
CISA-KEV: Not listedEPSS PROB: 4.4%CVSS: 9.8Exploit: Metasploit · public exploitExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Xerte Online Toolkits versions 3.15 and earlier contain an incomplete input validation vulnerability in the elFinder connector endpoint that fails to block PHP-executable extensions .php4 due to an incorrect regex pattern. Unauthenticated attackers can exploit this flaw combined with authentication bypass and path traversal vulnerabilities to upload malicious PHP code, rename it with a .php4 extension, and execute arbitrary operating system commands on the server.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
70
EG Risk 70/100

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
Severity98% × 45%
Exploitation65% × 40%
Automatability0% × 15%
EPSS PROB
4.4%
EPSS %ILE
91st
KEV
Not listed

Published

April 22, 2026

Last Modified

July 14, 2026

Advisory Details (8)

Auto-updated Oct 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Xerte Online Toolkits File Upload RCE via elfinder Connector | Advisories | VulnCheck

https://www.vulncheck.com/advisories/xerte-online-toolkits-file-upload-rce-via-elfinder-connector
generic

Security Vulnerabilities · Issue #1527 · thexerteproject/xerteonlinetoolkits · GitHub

https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527
github_commit

commit 507d55c5e91b (thexerteproject/xerteonlinetoolkits)

Fix landed in thexerteproject/xerteonlinetoolkits commit 507d55c5e91b — awaiting tagged release

https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23
github_commit

commit 17e4f945fe6a (thexerteproject/xerteonlinetoolkits)

Fix landed in thexerteproject/xerteonlinetoolkits commit 17e4f945fe6a — awaiting tagged release

https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212
github_commit

commit 02661be88cc3 (thexerteproject/xerteonlinetoolkits)

Fix landed in thexerteproject/xerteonlinetoolkits commit 02661be88cc3 — awaiting tagged release

https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805
generic

GitHub - bootstrapbool/xerteonlinetoolkits-rce: Unauthenticated Xerte Online Toolkits exploit. Requires knowing a valid username. · GitHub

https://github.com/bootstrapbool/xerteonlinetoolkits-rce
generic
https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html
generic

Xerte Online Toolkits

https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 288 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:47 UTCEPSS rescore
  5. 2026-10-06 15:17 UTCEPSS rescore
  6. 2026-10-05 17:42 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-28 13:51 UTCEPSS rescore
  11. 2026-09-27 13:48 UTCEPSS rescore
  12. 2026-09-26 15:58 UTCEPSS rescore
  13. 2026-09-26 00:26 UTCEPSS rescore
  14. 2026-09-21 16:19 UTCOSV refresh
  15. 2026-09-18 19:28 UTCEPSS rescore
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-17 19:30 UTCEPSS rescore
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-15 03:11 UTCEPSS rescore
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-12 15:01 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 09:37 UTCEPSS rescore
  25. 2026-09-10 09:34 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 22:00 UTCEPSS rescore
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 13:47 UTCEPSS rescore
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-02 14:12 UTCEPSS rescore
  6. 2026-09-02 13:14 UTCOSV refresh
  7. 2026-09-01 13:53 UTCEPSS rescore
  8. 2026-09-01 04:39 UTCEPSS rescore
  9. 2026-08-30 19:17 UTCEPSS rescore
  10. 2026-08-30 01:22 UTCEPSS rescore
  11. 2026-08-28 21:41 UTCEPSS rescore
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-23 00:19 UTCEPSS rescore
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-19 17:03 UTCEPSS rescore
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 10:01 UTCGHSA enrichment
  24. 2026-08-16 05:56 UTCEG score recompute
  25. 2026-08-16 05:56 UTCGHSA enrichment
  26. 2026-08-16 02:14 UTCEPSS rescore
  27. 2026-08-15 01:30 UTCEPSS rescore
  28. 2026-08-15 01:15 UTCGHSA enrichment
  29. 2026-08-14 21:09 UTCGHSA enrichment
  30. 2026-08-14 17:04 UTCGHSA enrichment
  31. 2026-08-14 12:26 UTCGHSA enrichment
  32. 2026-08-14 08:21 UTCGHSA enrichment
  33. 2026-08-14 04:16 UTCEG score recompute
  34. 2026-08-14 04:16 UTCGHSA enrichment
  35. 2026-08-13 22:00 UTCEPSS rescore
  36. 2026-08-13 08:38 UTCGHSA enrichment
  37. 2026-08-13 02:37 UTCGHSA enrichment
  38. 2026-08-12 22:32 UTCGHSA enrichment
  39. 2026-08-12 18:28 UTCEG score recompute
  40. 2026-08-12 18:28 UTCGHSA enrichment
  41. 2026-08-12 13:50 UTCEPSS rescore
  42. 2026-08-12 00:53 UTCGHSA enrichment
  43. 2026-08-11 20:48 UTCGHSA enrichment
  44. 2026-08-11 16:44 UTCEG score recompute
  45. 2026-08-11 16:44 UTCGHSA enrichment
  46. 2026-08-11 06:22 UTCGHSA enrichment
  47. 2026-08-11 02:17 UTCEG score recompute
  48. 2026-08-11 02:17 UTCGHSA enrichment
  49. 2026-08-11 00:00 UTCEPSS rescore
  50. 2026-08-10 13:10 UTCGHSA enrichment
  51. 2026-08-10 09:05 UTCGHSA enrichment
  52. 2026-08-10 05:01 UTCGHSA enrichment
  53. 2026-08-10 00:56 UTCGHSA enrichment
  54. 2026-08-09 20:51 UTCGHSA enrichment
  55. 2026-08-09 16:45 UTCEG score recompute
  56. 2026-08-09 16:45 UTCGHSA enrichment
  57. 2026-08-09 13:46 UTCEPSS rescore
  58. 2026-08-09 12:41 UTCGHSA enrichment
  59. 2026-08-09 07:34 UTCGHSA enrichment
  60. 2026-08-09 03:29 UTCEG score recompute
  61. 2026-08-09 03:29 UTCGHSA enrichment
  62. 2026-08-08 16:37 UTCEPSS rescore
  63. 2026-08-08 09:09 UTCGHSA enrichment
  64. 2026-08-08 05:04 UTCGHSA enrichment
  65. 2026-08-08 00:59 UTCGHSA enrichment
  66. 2026-08-07 20:54 UTCGHSA enrichment
  67. 2026-08-07 16:49 UTCEG score recompute
  68. 2026-08-07 16:49 UTCGHSA enrichment
  69. 2026-08-07 12:45 UTCGHSA enrichment
  70. 2026-08-06 21:21 UTCGHSA enrichment
  71. 2026-08-06 17:16 UTCEG score recompute
  72. 2026-08-06 17:16 UTCGHSA enrichment
  73. 2026-08-06 13:46 UTCEPSS rescore
  74. 2026-08-06 11:26 UTCGHSA enrichment
  75. 2026-08-06 07:12 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Metasploit module). Defenders should treat patch urgency accordingly.

  • Metasploitexploit/multi/http/xerte_unauthenticated_mediaupload✓ verified
    Published Jun 16, 2026

    Xerte Online Toolkits Arbitrary File Upload - Unauthenticated Media Upload

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34415?
CVE-2026-34415 is a critical vulnerability published on April 22, 2026. Xerte Online Toolkits versions 3.15 and earlier contain an incomplete input validation vulnerability in the elFinder connector endpoint that fails to block PHP-executable extensions .php4 due to an incorrect regex pattern. Unauthenticated attackers can exploit this flaw combined with authentication…
When was CVE-2026-34415 disclosed?
CVE-2026-34415 was first published on April 22, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34415 actively exploited?
CVE-2026-34415 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 4.4% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34415?
CVE-2026-34415 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-34415?
An upstream fix for CVE-2026-34415 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

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