CVE-2026-88856

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=update_osgallery, read a JSON request body and called the value of a method field as a live PHP function, passing the value of a package field as its single argument, with no allow-list or is_callable() check of any kind. Any function name compatible with a single argument was directly reachable, including system, exec, shell_exec, and passthru.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

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
Severity94% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

September 20, 2026

Last Modified

September 22, 2026

Advisory Details (1)

Auto-updated Sep 23, 2026
No patch confirmed yet.
generic

OrdaSoft Web Design and Web Development - Joomla, Drupal, WordPress

https://www.OrdaSoft.com/

Vendor Advisories for CVE-2026-88856(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 44× in last 7d / 44× 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.

  1. 2026-09-25 11:58 UTCGHSA enrichment
  2. 2026-09-25 07:57 UTCGHSA enrichment
  3. 2026-09-25 03:56 UTCGHSA enrichment
  4. 2026-09-24 23:57 UTCGHSA enrichment
  5. 2026-09-24 19:52 UTCGHSA enrichment
  6. 2026-09-24 15:52 UTCEG score recompute
  7. 2026-09-24 15:52 UTCGHSA enrichment
  8. 2026-09-24 14:04 UTCEPSS rescore
  9. 2026-09-24 11:52 UTCGHSA enrichment
  10. 2026-09-24 07:52 UTCGHSA enrichment
  11. 2026-09-24 03:53 UTCGHSA enrichment
  12. 2026-09-23 23:52 UTCGHSA enrichment
  13. 2026-09-23 19:52 UTCEG score recompute
  14. 2026-09-23 19:52 UTCGHSA enrichment
  15. 2026-09-23 17:54 UTCEPSS rescore
  16. 2026-09-23 15:52 UTCGHSA enrichment
  17. 2026-09-23 11:53 UTCGHSA enrichment
  18. 2026-09-23 07:53 UTCGHSA enrichment
  19. 2026-09-23 03:53 UTCGHSA enrichment
  20. 2026-09-22 23:53 UTCGHSA enrichment
  21. 2026-09-22 19:53 UTCEG score recompute
  22. 2026-09-22 19:53 UTCGHSA enrichment
  23. 2026-09-22 17:00 UTCEG score recompute
  24. 2026-09-22 16:59 UTCGHSA enrichment
  25. 2026-09-22 16:01 UTCEPSS rescore
Show 19 more
  1. 2026-09-22 12:55 UTCGHSA enrichment
  2. 2026-09-22 08:54 UTCGHSA enrichment
  3. 2026-09-22 04:51 UTCEG score recompute
  4. 2026-09-22 04:51 UTCGHSA enrichment
  5. 2026-09-22 03:23 UTCGHSA enrichment
  6. 2026-09-21 23:23 UTCEG score recompute
  7. 2026-09-21 23:23 UTCGHSA enrichment
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-21 19:23 UTCGHSA enrichment
  10. 2026-09-21 15:23 UTCEG score recompute
  11. 2026-09-21 15:23 UTCGHSA enrichment
  12. 2026-09-21 14:18 UTCGHSA enrichment
  13. 2026-09-21 10:18 UTCGHSA enrichment
  14. 2026-09-21 06:18 UTCGHSA enrichment
  15. 2026-09-21 02:18 UTCGHSA enrichment
  16. 2026-09-20 22:18 UTCGHSA enrichment
  17. 2026-09-20 18:17 UTCEG score recompute
  18. 2026-09-20 17:56 UTCEG score recompute
  19. 2026-09-20 17:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88856?
CVE-2026-88856 is a critical vulnerability published on September 20, 2026. Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=updateosgallery, read a JSON request body and called the value of a method field as a live PHP function,…
When was CVE-2026-88856 disclosed?
CVE-2026-88856 was first published in the National Vulnerability Database on September 20, 2026, with the most recent update on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88856 actively exploited?
CVE-2026-88856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 50.4% of all scored CVEs.
What is the CVSS score of CVE-2026-88856?
CVE-2026-88856 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-88856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88856, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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