Which products and versions are affected by CVE-2020-11455?

Affected: Limesurvey versions 4.1.12, 4.1.12-200324. The full list is in the CVE brief.

Is CVE-2020-11455 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.

Is CVE-2020-11455 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-11455?

Public exploit code is available.

Is there a fix for CVE-2020-11455?

Fixed versions are available, including Limesurvey 4.1.12, Limesurvey 4.1.13, Limesurvey <=4.1.11.

How urgently should CVE-2020-11455 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2020-11455

Q: What is CVE-2020-11455?

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

Q: How urgently should CVE-2020-11455 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CriticalExploitedPublic exploit

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

Published Apr 1, 2020 · Updated Aug 7, 2026 · Also known as BIT-limesurvey-2020-11455

Key Facts

Patch immediately

CVE-2020-11455 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Limesurvey.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023. Public exploit code is available.
EPSS estimates a 97% probability of exploitation in the next 30 days.
Fixed versions are available, including Limesurvey 4.1.12, Limesurvey 4.1.13, Limesurvey <=4.1.11.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

97%

Higher than 99.8% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2020-11455 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Nov 25, 2023	n/a	Not reported
CIRCL KEV	Oct 14, 2023	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
LimesurveyLimesurvey	4.1.12, 4.1.12-200324	4.1.11

Patched Releases

Limesurvey

4.1.12, 4.1.13, <=4.1.11

Timeline

Publicly disclosed
Apr 1, 2020
Added to CIRCL KEV
Oct 14, 2023
Added to Industry KEV feed
Nov 25, 2023
Last updated
Aug 7, 2026

Weakness Type

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References

9 more references in the full CVE brief

FAQ

Common Questions.

LimeSurvey before 4.1.12+200324 contains a path traversal vulnerability in application/controllers/admin/LimeSurveyFileManager.php.
Affected: Limesurvey versions 4.1.12, 4.1.12-200324. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Limesurvey 4.1.12, Limesurvey 4.1.13, Limesurvey <=4.1.11.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2020-11455 Running On Your Attack Surface?

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