CVE-2020-11455

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2022-05-24. 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 97%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 97%CVSS: 9.8Exploit: Metasploit · Exploit-DB (verified) · 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.

LimeSurvey before 4.1.12+200324 contains a path traversal vulnerability in application/controllers/admin/LimeSurveyFileManager.php.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
87(Track*)
EG Risk 87/100SSVC: 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%
Exploitation97% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
97%
EPSS %ILE
100%
KEV
Not listed

Published

April 1, 2020

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 27, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic🟡 PoC Available

LimeSurvey 4.1.11 - 'File Manager' Path Traversal - PHP webapps Exploit

https://www.exploit-db.com/exploits/48297
github_commit

commit daf50ebb1657 (LimeSurvey/LimeSurvey)

Fix landed in LimeSurvey/LimeSurvey commit daf50ebb1657 — awaiting tagged release

https://github.com/LimeSurvey/LimeSurvey/commit/daf50ebb16574badfb7ae0b8526ddc5871378f1b

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 10× 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. 2026-07-23 01:48 UTCEG score recompute
  2. 2026-07-22 22:33 UTCEG score recompute
  3. 2026-07-21 15:22 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
  5. 2026-07-19 15:29 UTCOSV refresh
  6. 2026-07-12 05:44 UTCEPSS rescore
  7. 2026-07-08 15:11 UTCEPSS rescore
  8. 2026-07-02 03:17 UTCOSV refresh
  9. 2026-06-30 23:20 UTCEPSS rescore
  10. 2026-06-30 23:20 UTCEPSS rescore
  11. 2026-06-28 04:54 UTCEPSS rescore
  12. 2026-06-28 04:54 UTCEPSS rescore
  13. 2026-06-23 21:31 UTCEPSS rescore
  14. 2026-06-23 21:31 UTCEPSS rescore
  15. 2026-06-18 17:50 UTCEPSS rescore
  16. 2026-06-18 17:50 UTCEPSS rescore
  17. 2026-06-15 17:46 UTCEPSS rescore
  18. 2026-06-14 06:13 UTCOSV refresh
  19. 2026-06-12 23:09 UTCEPSS rescore
  20. 2026-06-08 14:15 UTCEPSS rescore
  21. 2026-06-08 14:15 UTCEPSS rescore
  22. 2026-06-05 22:45 UTCEPSS rescore
  23. 2026-06-05 22:45 UTCEPSS rescore
  24. 2026-06-05 06:08 UTCEPSS rescore
  25. 2026-06-02 20:11 UTCEPSS rescore
Show 8 more
  1. 2026-06-02 20:11 UTCEPSS rescore
  2. 2026-05-31 00:15 UTCEPSS rescore
  3. 2026-05-31 00:14 UTCEPSS rescore
  4. 2026-05-27 05:44 UTCEG score recompute
  5. 2026-05-27 05:44 UTCGHSA enrichment
  6. 2026-05-26 13:42 UTCEPSS rescore
  7. 2026-05-26 13:42 UTCEPSS rescore
  8. 2026-05-23 17:35 UTCOSV refresh

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-48297✓ verified
    First seen Apr 6, 2020

    LimeSurvey 4.1.11 - 'File Manager' Path Traversal

    Open source ↗
  • Metasploitauxiliary/scanner/http/limesurvey_zip_traversals✓ verified
    First seen Apr 2, 2020

    LimeSurvey Zip Path Traversals

    Open source ↗
  • Nucleihttp/cves/2020/CVE-2020-11455.yaml
    First seen Jan 1, 2020

    LimeSurvey 4.1.11 - Local File Inclusion

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-11455?
CVE-2020-11455 is a critical vulnerability published on April 1, 2020. LimeSurvey before 4.1.12+200324 contains a path traversal vulnerability in application/controllers/admin/LimeSurveyFileManager.php.
When was CVE-2020-11455 disclosed?
CVE-2020-11455 was first published in the National Vulnerability Database on April 1, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-11455 actively exploited?
CVE-2020-11455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97% probability of exploitation in the next 30 days, which ranks it in the top 0.1% of all scored CVEs.
What is the CVSS score of CVE-2020-11455?
CVE-2020-11455 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-11455?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11455, 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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