CVE-2024-42906Public exploitNetwork attack vector

Browser script execution via unescaped upload filename

Published Aug 26, 2024 · Updated Aug 26, 2024

Reflected XSS in TestLink before 1.9.20 allows remote attackers to execute JavaScript in a user's browser through an uploaded filename. The file-upload validation path embeds a rejected, attacker-controlled filename in its error pop-up without neutralizing HTML or script content. An attacker must induce a user to process the crafted upload; the script then runs in that user's TestLink origin and can read non-HttpOnly session cookies.

CVSS severity6.1
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in TestLink before 1.9.20 allows remote attackers to execute JavaScript in a user's browser through an uploaded filename. The file-upload validation path embeds a rejected, attacker-controlled filename in its error pop-up without neutralizing HTML or script content. An attacker must induce a user to process the crafted upload; the script then runs in that user's TestLink origin and can read non-HttpOnly session cookies.

The record

CVE
CVE-2024-42906
Published
Aug 26, 2024
Updated
Aug 26, 2024
Vendor
TestLink Development Team
Product
TestLink
Classifications
CWE-79, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <v.1.9.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TestLink Development Team · TestLinkversion=0 <v.1.9.20

Published CVSS scores

4.1CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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