CVE-2023-45878

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-11-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 63%
  • Public exploit code is available (ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 63%CVSS: 9.8Exploit: ssvc poc · epss top5pct · epss high · public exploitExposed: 0

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

GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubrics_visualise_saveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. The img parameter is expected to be a base64 encoded image. If the path parameter is set, the defined path is used as the destination folder, concatenated with the absolute path of the installation directory. The content of the img parameter is base64 decoded and written to the defined file path. This allows creation of PHP files that permit Remote Code Execution (unauthenticated).

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
85(Attend)
EG Risk 85/100SSVC: Attend

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%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
63%
EPSS %ILE
99%
KEV
Not listed

Published

November 14, 2023

Last Modified

June 17, 2026

Advisory Details (1)

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

usd-2023-0025 - usd HeroLab

https://herolab.usd.de/security-advisories/usd-2023-0025/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 29× 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. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-01 21:06 UTCOSV refresh
  4. 2026-08-01 04:14 UTCEPSS rescore
  5. 2026-07-30 16:26 UTCEPSS rescore
  6. 2026-07-30 16:26 UTCEPSS rescore
  7. 2026-07-30 01:28 UTCEPSS rescore
  8. 2026-07-28 15:34 UTCEPSS rescore
  9. 2026-07-28 15:34 UTCEPSS rescore
  10. 2026-07-26 14:52 UTCEPSS rescore
  11. 2026-07-25 14:16 UTCEPSS rescore
  12. 2026-07-24 14:16 UTCEPSS rescore
  13. 2026-07-24 14:16 UTCEPSS rescore
  14. 2026-07-23 14:16 UTCEPSS rescore
  15. 2026-07-23 02:27 UTCEG score recompute
  16. 2026-07-22 23:14 UTCEG score recompute
  17. 2026-07-22 14:06 UTCEPSS rescore
  18. 2026-07-21 15:23 UTCEPSS rescore
  19. 2026-07-21 15:23 UTCEPSS rescore
  20. 2026-07-20 17:06 UTCEPSS rescore
  21. 2026-07-19 02:27 UTCEPSS rescore
  22. 2026-07-16 17:01 UTCEPSS rescore
  23. 2026-07-15 16:56 UTCEPSS rescore
  24. 2026-07-15 16:56 UTCEPSS rescore
  25. 2026-07-15 04:19 UTCOSV refresh
Show 37 more
  1. 2026-07-13 22:28 UTCEPSS rescore
  2. 2026-07-13 22:28 UTCEPSS rescore
  3. 2026-07-13 06:11 UTCEPSS rescore
  4. 2026-07-13 06:11 UTCEPSS rescore
  5. 2026-07-11 08:26 UTCEPSS rescore
  6. 2026-07-09 19:08 UTCEPSS rescore
  7. 2026-07-08 15:13 UTCEPSS rescore
  8. 2026-07-02 16:59 UTCEPSS rescore
  9. 2026-07-01 15:05 UTCEPSS rescore
  10. 2026-06-28 04:55 UTCEPSS rescore
  11. 2026-06-27 04:37 UTCOSV refresh
  12. 2026-06-27 03:07 UTCEPSS rescore
  13. 2026-06-25 13:48 UTCEPSS rescore
  14. 2026-06-25 13:48 UTCEPSS rescore
  15. 2026-06-23 21:31 UTCEPSS rescore
  16. 2026-06-23 21:31 UTCEPSS rescore
  17. 2026-06-21 14:55 UTCEPSS rescore
  18. 2026-06-21 14:55 UTCEPSS rescore
  19. 2026-06-21 01:58 UTCEPSS rescore
  20. 2026-06-21 01:58 UTCEPSS rescore
  21. 2026-06-18 17:51 UTCEPSS rescore
  22. 2026-06-17 17:51 UTCEPSS rescore
  23. 2026-06-15 17:47 UTCEPSS rescore
  24. 2026-06-12 23:11 UTCEPSS rescore
  25. 2026-06-12 23:10 UTCEPSS rescore
  26. 2026-06-09 15:17 UTCOSV refresh
  27. 2026-06-08 14:16 UTCEPSS rescore
  28. 2026-06-08 14:16 UTCEPSS rescore
  29. 2026-06-05 22:46 UTCEPSS rescore
  30. 2026-06-05 22:46 UTCEPSS rescore
  31. 2026-05-31 00:15 UTCEPSS rescore
  32. 2026-05-31 00:15 UTCEPSS rescore
  33. 2026-05-27 13:39 UTCEPSS rescore
  34. 2026-05-27 13:39 UTCEPSS rescore
  35. 2026-05-24 14:05 UTCEG score recompute
  36. 2026-05-24 14:05 UTCGHSA enrichment
  37. 2026-05-24 05:27 UTCOSV refresh

Publicly available exploits

(5 references)

Working exploit code is in the public domain (4 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCCan0I0Ever0Enter/CVE-2023-45878
    First seen Apr 13, 2025
    Open source ↗
  • GitHub PoCdavidzzo23/CVE-2023-45878
    First seen Mar 30, 2025

    GibbonEdu Arbitrary File Write to Remote Code Execution

    Open source ↗
  • GitHub PoCbyt3loss/CVE-2023-45878_to_RCE
    First seen Mar 30, 2025

    This script chains and automates Arbitrary File Write to RCE on Gibbon LMS through CVE-2023-45878 exploitation.

    Open source ↗
  • GitHub PoCkillercd/CVE-2023-45878
    First seen Mar 20, 2025

    CVE-2023-45878 GibbonEdu Arbitrary File Write

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-45878.yaml
    First seen Jan 1, 2023

    Gibbon LMS <= v25.0.01 - File Upload to RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-45878?
CVE-2023-45878 is a critical vulnerability published on November 14, 2023. GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubricsvisualisesaveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. The img parameter is expected to be a base64 encoded image. If the path parameter is set,…
When was CVE-2023-45878 disclosed?
CVE-2023-45878 was first published in the National Vulnerability Database on November 14, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-45878 actively exploited?
CVE-2023-45878 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63% probability of exploitation in the next 30 days, which ranks it in the top 0.9% of all scored CVEs.
What is the CVSS score of CVE-2023-45878?
CVE-2023-45878 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-45878?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-45878, 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

Explore the affected products and dependency analysis for CVE-2023-45878

Explore →

Is Your Infrastructure Affected by CVE-2023-45878?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs