PT-2026-21427 · Zaher1307 · Tiny Web Server

Ypuluzm · Published 2026-02-22 · Updated 2026-02-27 · CVE-2026-2940

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Zaher1307 tiny web server versions prior to 8d77b1044a0ca3a5297d8726ac8aa2cf944d481b

Description A flaw exists in the URL Handler component of Zaher1307 tiny web server. This issue allows for an out-of-bounds write, potentially enabling remote attacks. The vulnerable code resides within the tiny web server/tiny.c file, specifically in the tiny web server/tiny.c function. The vulnerability has been publicly disclosed.

Recommendations Update Zaher1307 tiny web server to a version prior to 8d77b1044a0ca3a5297d8726ac8aa2cf944d481b.

Exploit

Fix

Memory Corruption

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-119

Related Identifiers

CVE-2026-2940

Affected Products

Tiny Web Server

References · 12

• 🔥 https://github.com/Zaher1307/tiny_web_server/issues/1#issue-3924357507 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-2940 · Security Note
• https://github.com/Zaher1307/tiny_web_server/issues/1 · Note
• https://twitter.com/cracbot/status/2027338011005030491 · Twitter Post
• https://t.me/CVEtracker/45429 · Telegram Post
• https://twitter.com/CVEnew/status/2025523990991700248 · Twitter Post
• https://vuldb.com/?ctiid.347312 · Note
• https://t.me/cveNotify/152772 · Telegram Post
• https://vuldb.com/?id.347312 · Note
• https://vuldb.com/?submit.756036 · Note
• https://twitter.com/VulmonFeeds/status/2025518690985214288 · Twitter Post
• https://github.com/Zaher1307/tiny_web_server · Note