CVE-2026-48946

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory published 2026-06-25. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

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

The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard mod_php matches \.php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web server's context.

CVSS v3
6.3
EG Score
6.3(high)
EPSS
6.4%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 28, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

K2 | The powerful content extension for Joomla! developed by JoomlaWorks

https://www.getk2.org/

Vendor Advisories for CVE-2026-48946(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 18× in last 7d / 31× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 05:05 UTCEG score recompute
  3. 2026-07-06 05:05 UTCGHSA enrichment
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 04:02 UTCEG score recompute
  6. 2026-07-05 04:01 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-04 02:58 UTCEG score recompute
  10. 2026-07-04 02:58 UTCGHSA enrichment
  11. 2026-07-03 01:56 UTCEG score recompute
  12. 2026-07-03 01:55 UTCGHSA enrichment
  13. 2026-07-02 00:53 UTCEG score recompute
  14. 2026-07-02 00:53 UTCGHSA enrichment
  15. 2026-07-01 15:07 UTCEPSS rescore
  16. 2026-06-30 23:51 UTCEG score recompute
  17. 2026-06-30 23:51 UTCGHSA enrichment
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-29 22:49 UTCEG score recompute
  20. 2026-06-29 22:49 UTCGHSA enrichment
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-28 21:47 UTCEG score recompute▲ 6.30
  24. 2026-06-28 21:47 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 6 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-27 03:08 UTCEPSS rescore
  4. 2026-06-25 19:49 UTCNVD updateCVSS v3 → 6.3 · severity → MEDIUM
  5. 2026-06-25 17:53 UTCEG score recompute
  6. 2026-06-25 17:48 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-48946?
CVE-2026-48946 is a medium vulnerability published on June 25, 2026. The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard mod_php matches \.php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web…
When was CVE-2026-48946 disclosed?
CVE-2026-48946 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48946 actively exploited?
CVE-2026-48946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48946?
CVE-2026-48946 has a CVSS v3.1 base score of 6.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-48946?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48946, 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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