CVE-2023-53980

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-23. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track*)
EG Risk 60/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
53.7%
KEV
Not listed

Published

December 22, 2025

Last Modified

December 26, 2025

Advisory Details (3)

Auto-updated Jun 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

projectSend r1605 - Remote Code Exectution RCE - PHP webapps Exploit

https://www.exploit-db.com/exploits/51238
generic

ProjectSend r1605 Remote Code Execution via File Extension Manipulation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/projectsend-remote-code-execution-via-file-extension-manipulation
generic

ProjectSend - Secure File Sharing Made Simple | Free Open Source Software

https://www.projectsend.org/

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-53980?
CVE-2023-53980 is a critical vulnerability published on December 22, 2025. ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server.
When was CVE-2023-53980 disclosed?
CVE-2023-53980 was first published in the National Vulnerability Database on December 22, 2025, with the most recent update on December 26, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53980 actively exploited?
CVE-2023-53980 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-53980?
CVE-2023-53980 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-53980?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53980, 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.

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