libarchive: libarchive: Signed Integer Overflow in archive_write_zip_header

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64...

CVE-2026-45820

fflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync. A crafted ZIP archive with a central directory entry declaring compressedsize=0xFFFFFFFF ZIP64 sentinel but missing the required ZIP64 extra field tag 0x0001 causes z64e to loop indefinitely due to...

CVE-2026-45820

fflate (versions up to 0.8.2) is vulnerable to denial of service through an infinite loop in unzipSync() when processing a crafted ZIP64 central directory entry: compressed_size=0xFFFFFFFF with missing ZIP64 extra tag 0x0001 causes out-of-bounds reads to yield 0, keeping the loop condition true. ...

CVE-2026-45820

fflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync. A crafted ZIP archive with a central directory entry declaring compressedsize=0xFFFFFFFF ZIP64 sentinel but missing the required ZIP64 extra field tag 0x0001 causes z64e to loop indefinitely due to...

DEBIAN-CVE-2026-16517

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64...

CVE-2026-16517

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64...

CVE-2026-16517

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64...

CVE-2026-16517

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the archivewritezipheader function when ZIP encryption is enabled and the entry file size is close to INT64MAX. An attacker can cause undefined behavior, such as incorrect Zip64 extension decisions or a...

EulerOS Virtualization 2.13.0 : python3 (EulerOS-SA-2026-2188)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : If the value passed to os.path.expandvars is user-controlled a performance degradation is possible when expanding environment...

CVE-2026-48959

IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward. fastForward compares length $offset the digit count of the offset, 1 to 19 against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration...

IO::Uncompress::Unzip 安全漏洞

IO::Uncompress::Unzip is a decompression library developed by PMQS’s individual developers. Versions of IO::Uncompress::Unzip prior to version 2.220 contained security vulnerabilities. These vulnerabilities stemmed from the byte-reading loop in fastForward, which caused the CPU to be exhausted. I...

CLSA-2026-1778233301 python3.9: Fix of 7 CVEs

CVE-2025-1795: fix incorrect parsing of email addresses with special chars - CVE-2025-4516: fix use-after-free in unicode-escape decoder with non-strict error handler - CVE-2025-6069: fix quadratic complexity in HTMLParser special input - CVE-2025-8291: fix zip64 end-of-central-directory record...

CLSA-2026-1778129970 python3.11: Fix of 7 CVEs

CVE-2026-0672: reject control characters in http.cookies cookie names, values, and parameters to prevent header injection - CVE-2026-3644: reject control characters in Morsel.update, |= operator, and unpickling paths missed by CVE-2026-0672; add output validation to BaseCookie.jsoutput -...

cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked

A zip file handling flaw has been discovered in the python standard library zipfile module. The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory EOCD Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record wou...

CLSA-2026-1776330599 python3.9: Fix of 11 CVEs

CVE-2025-8291: fix zipfile ZIP64 EOCD Locator offset validation - CVE-2025-6069: fix quadratic complexity in HTMLParser - CVE-2025-4516: fix use-after-free in unicode-escape decoder with error handler - CVE-2026-2297: ensure SourcelessFileLoader uses io.opencode - CVE-2026-3479: reject invalid...

Security Bulletin: IBM Storage Ceph is vulnerable to Improper Validation of Specified Index, Position, or Offset in Input in zipfile (CVE-2025-8291)

Summary zipfile is used by IBM Storage Ceph. CVE-2025-8291 This bulletin identifies the steps to take to address the vulnerability in Ceph. Vulnerability Details CVEID:CVE-2025-8291 DESCRIPTION: The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory EOCD Locator...

EulerOS Virtualization 2.12.0 : python3 (EulerOS-SA-2026-1512)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : When building nested elements using xml.dom.minidom methods such as appendChild that have a dependency on clearidcache the algorit...

EulerOS 2.0 SP11 : python3 (EulerOS-SA-2026-1588)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : The 'zipfile' module would not check the validity of the ZIP64 End ofCentral Directory EOCD Locator record offset value would not be used to loca...

EulerOS 2.0 SP12 : python3 (EulerOS-SA-2026-1407)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : When building nested elements using xml.dom.minidom methods such as appendChild that have a dependency on clearidcache the algorithm is quadratic...