Out-of-Bounds Write Vulnerability in Zaher1307 Tiny Web Server
CVE-2026-2940

6.9MEDIUM

Key Information:

Vendor

Zaher1307

Status
Tiny Web Server
Vendor
CVE Published:
22 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2940?

A vulnerability in Zaher1307 Tiny Web Server allows for an out-of-bounds write due to improper handling in the URL Handler component of the application. This vulnerability can be exploited remotely, potentially allowing an attacker to manipulate the server and impact its functionality. The issue was reported to the project maintainers; however, a response has not been provided, leaving affected users at risk. The continuous delivery model used by Tiny Web Server means that users may be unaware of which versions contain the fix.

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Affected Version(s)

tiny_web_server 8d77b1044a0ca3a5297d8726ac8aa2cf944d481b

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2940 - Proof of Concept

References

https://vuldb.com/?id.347312
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347312
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https://vuldb.com/?submit.756036
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ypuluzm (VulDB User)
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