BIT-MODSECURITY2-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

BIT-MODSECURITY-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

SUSE CVE-2026-30923

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

PT-2026-38473

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923

CVE-2026-30923 affects libModSecurity3 (ModSecurity v3) where a rule using the t:hexDecode transformation can trigger a segmentation fault when inspecting a single-character query string, causing worker process crashes and denial of service. All versions prior to 3.0.15 are affected; the issue is...

CVE-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

Modsecurity 缓冲区错误漏洞

Modsecurity is an open-source web traffic security processing library developed by OWASP ModSecurity. Versions of Modsecurity prior to 3.0.15 contained a buffer error vulnerability. This vulnerability arises from using the t:hexDecode conversion in rule checks for query string parameters containi...

PT-2026-36537

Name of the Vulnerable Software and Affected Versions libModSecurity3 versions prior to 3.0.15 Description A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a single character. This allows an attacker to crash worker processe...

modsecurity3 -- multiple vulnerabilities

ModSecurity is an open source web application firewall engine. According to the upstream changelog, multiple vulnerabilities have been fixed. CVE-2026-42268: unsigned integer underflow in verify operators CVE-2026-30923: buffer overflow in hexdecode...

Security update for python-PyPDF2 (moderate)

openSUSE security update: security update for python-pypdf2 ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20348-1 Rating: moderate References: bsc1259404 Cross-References: CVE-2026-28804 CVSS scores: CVE-2026-28804 SUSE : 6.5...

SUSE CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5...

CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5...

UBUNTU-CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5...

CVE-2026-28804 pypdf: Inefficient decoding of ASCIIHexDecode streams

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5...

CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5...

pypdf 安全漏洞

pypdf is an open-source, free Python library developed by py-pdf. It allows for splitting, merging, cropping, and converting pages within PDF files. Prior to version 6.7.5, pypdf had a security vulnerability. This vulnerability stemmed from the use of the /ASCIIHexDecode filter when accessing...

icadecrypt.c.txt

/ icadecrypt.c Decrypt stored Citrix ICA passwords in appsrv.ini. Dug Song / include include include include include int hexdecodechar src, uchar dst, int outsize char p, pe; uchar q, qe, ch, cl; pe = src + strlensrc; qe = dst + outsize; for p = src, q = dst; p = '0' && ch = 'a' && ch = '0' && cl...