CVE-2026-82396

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% 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
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, src/Sulu/Bundle/MediaBundle/Controller/MediaStreamController.php allows the /media/{id}/download/{slug} route and its administration variant to honor the inline query parameter for scriptable MIME types. The vulnerable stored Content-Type values include text/html, application/xhtml+xml, text/xml, and application/xml. An attacker with media upload permission can store an HTML, XHTML, or XML document and create a link using inline=1, causing the application to return the file on the Sulu origin instead of forcing Content-Disposition attachment. When an authenticated victim opens the link, attacker-controlled JavaScript can execute with the victim's Sulu-origin session and can read data or perform actions as that victim. This issue is fixed in versions 2.6.25 and 3.0.8.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 8, 2026

Advisory Details (4)

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

Release 3.0.8 (2026-07-17)

Patch available: sulu/sulu 3.0.8

https://github.com/sulu/sulu/releases/tag/3.0.8
github_release Patch Available

Release 2.6.25 (2026-07-17)

Patch available: sulu/sulu 2.6.25

https://github.com/sulu/sulu/releases/tag/2.6.25
github_commit Patch Available

commit d061094f5b7b (sulu/sulu)

Patch available: sulu/sulu 2.6.25 (contains commit d061094f5b7b)

https://github.com/sulu/sulu/commit/d061094f5b7bb1d5e974544fce30bede9c7adf8e
github Patch Available

Stored XSS via media download inline-disposition override · Advisory · sulu/sulu · GitHub

https://github.com/sulu/sulu/security/advisories/GHSA-pp4x-ccxq-6r33

Vendor Advisories for CVE-2026-82396(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 rangeFixed inDependents
sulu/sulu3.0.0 ... 3.0.7 (19 versions)3.0.8—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 43× 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. 2026-09-24 19:53 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 21:25 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 22:56 UTCEG score recompute
  6. 2026-09-22 16:01 UTCEPSS rescore
  7. 2026-09-22 00:24 UTCEG score recompute
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-21 01:56 UTCEG score recompute
  10. 2026-09-20 20:16 UTCEPSS rescore
  11. 2026-09-20 03:27 UTCEG score recompute
  12. 2026-09-19 04:59 UTCEG score recompute
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-18 06:30 UTCEG score recompute
  15. 2026-09-17 08:01 UTCEG score recompute
  16. 2026-09-16 14:08 UTCEPSS rescore
  17. 2026-09-16 09:32 UTCEG score recompute
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 11:03 UTCEG score recompute
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 12:04 UTCEG score recompute
  23. 2026-09-12 15:08 UTCEG score recompute
  24. 2026-09-11 16:39 UTCEG score recompute
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 18 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 18:10 UTCEG score recompute
  3. 2026-09-09 19:41 UTCEG score recompute
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-08 05:18 UTCEG score recompute
  6. 2026-09-07 06:49 UTCEG score recompute
  7. 2026-09-06 13:48 UTCEPSS rescore
  8. 2026-09-06 08:19 UTCEG score recompute
  9. 2026-09-05 15:31 UTCEPSS rescore
  10. 2026-09-05 09:47 UTCEG score recompute
  11. 2026-09-04 11:18 UTCEG score recompute
  12. 2026-09-04 05:07 UTCEPSS rescore
  13. 2026-09-01 15:40 UTCEG score recompute
  14. 2026-09-01 14:34 UTCEG score recompute
  15. 2026-09-01 13:54 UTCEPSS rescore
  16. 2026-08-31 22:21 UTCEG score recompute
  17. 2026-08-31 21:30 UTCEG score recompute
  18. 2026-08-31 21:29 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-82396?
CVE-2026-82396 is a medium vulnerability published on August 31, 2026. Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, src/Sulu/Bundle/MediaBundle/Controller/MediaStreamController.php allows the /media/{id}/download/{slug} route and its administration variant to honor the inline query parameter…
When was CVE-2026-82396 disclosed?
CVE-2026-82396 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82396 actively exploited?
CVE-2026-82396 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.0% of all scored CVEs.
What is the CVSS score of CVE-2026-82396?
CVE-2026-82396 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-82396?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82396, 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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