CVE-2026-53992

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-08-05. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0.4%CVSS: 6.1Exploit: None knownExposed services: Not assessed

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

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
6.1MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.4%
EPSS %ILE
32nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 24, 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 15× in last 7d / 67× 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 146 total refreshes for this CVE.

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

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 on August 5, 2026, with the most recent update on September 24, 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 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53992?
CVE-2026-53992 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53992?
An upstream fix for CVE-2026-53992 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. The vendor advisories EchelonGraph has for CVE-2026-53992 are linked in the Vendor Advisories panel on this page.

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