CVE-2026-53992

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-08-05. the CNA's CVSS baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

ProjectSend r2029 contains a reflected cross-site scripting vulnerability in thumbnails-regenerate.php that allows remote attackers to inject arbitrary HTML and JavaScript by supplying unsanitized values in the start_date and end_date GET parameters, which are echoed unescaped into HTML attribute values. Attackers can craft a malicious URL that, when followed by an authenticated victim with edit_settings permissions, executes injected scripts in the application origin to steal session cookies or perform unauthorized actions including user management, file management, and application settings changes.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters | Advisories | VulnCheck

https://www.vulncheck.com/advisories/reflected-xss-in-projectsend-thumbnails-regenerate-php-via-start-date-end-date-parameters
github_commit

commit b4ad95b1bd3d (projectsend/projectsend)

Fix landed in projectsend/projectsend commit b4ad95b1bd3d — awaiting tagged release

https://github.com/projectsend/projectsend/commit/b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324
generic

GitHub - projectsend/projectsend: ProjectSend is a free, open source software that lets you share files with your clients, focused on ease of use and privacy. It supports clients groups, system users roles, statistics, multiple languages, detailed logs... and much more! · GitHub

https://github.com/projectsend/projectsend

Vendor Advisories for CVE-2026-53992(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 20× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 20:12 UTCGHSA enrichment
  3. 2026-08-19 19:59 UTCEG score recompute
  4. 2026-08-19 19:59 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 19:45 UTCEG score recompute
  7. 2026-08-18 19:45 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 19:31 UTCEG score recompute
  10. 2026-08-17 19:31 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 17:40 UTCEG score recompute
  13. 2026-08-16 17:40 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-15 17:25 UTCEG score recompute
  17. 2026-08-15 17:25 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 17:11 UTCEG score recompute
  20. 2026-08-14 17:11 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 18:42 UTCGHSA enrichment
  23. 2026-08-12 18:29 UTCEG score recompute
  24. 2026-08-12 18:29 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 19 more
  1. 2026-08-11 18:15 UTCEG score recompute
  2. 2026-08-11 18:15 UTCGHSA enrichment
  3. 2026-08-11 00:00 UTCEPSS rescore
  4. 2026-08-10 17:57 UTCGHSA enrichment
  5. 2026-08-09 17:24 UTCEG score recompute
  6. 2026-08-09 17:24 UTCGHSA enrichment
  7. 2026-08-09 13:46 UTCEPSS rescore
  8. 2026-08-08 17:11 UTCEG score recompute
  9. 2026-08-08 17:11 UTCGHSA enrichment
  10. 2026-08-08 16:37 UTCEPSS rescore
  11. 2026-08-07 16:57 UTCEG score recompute
  12. 2026-08-07 16:57 UTCGHSA enrichment
  13. 2026-08-06 16:43 UTCEG score recompute
  14. 2026-08-06 16:43 UTCGHSA enrichment
  15. 2026-08-06 13:47 UTCEPSS rescore
  16. 2026-08-05 16:29 UTCEG score recompute
  17. 2026-08-05 16:12 UTCEG score recompute
  18. 2026-08-05 15:26 UTCEG score recompute
  19. 2026-08-05 15:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53992?
CVE-2026-53992 is a medium vulnerability published on August 5, 2026. ProjectSend r2029 contains a reflected cross-site scripting vulnerability in thumbnails-regenerate.php that allows remote attackers to inject arbitrary HTML and JavaScript by supplying unsanitized values in the startdate and enddate GET parameters, which are echoed unescaped into HTML attribute…
When was CVE-2026-53992 disclosed?
CVE-2026-53992 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53992 actively exploited?
CVE-2026-53992 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 85.8% of all scored CVEs.
What is the CVSS score of CVE-2026-53992?
CVE-2026-53992 has a CVSS v4.0 base score of 6.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53992?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53992, 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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