pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with repeated malformed cross-reference streams. Patches This has been fixed in pypdf==6.21.2. Workarounds If you cannot upgrade yet, consider applying the changes fr...

GHSA-JR96-GVGH-J3R4 pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with repeated malformed cross-reference streams. Patches This has been fixed in pypdf==6.21.2. Workarounds If you cannot upgrade yet, consider applying the changes fr...

DEBIAN-CVE-2026-115580

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in...

DEBIAN-CVE-2026-115585

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing...

CVE-2026-115580

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in...

CVE-2026-115585

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing...

CVE-2026-115585

A flaw was found in pypdf. A remote attacker could cause a Denial of Service DoS by convincing a user or automated system to process a crafted PDF file containing repeated malformed cross-reference entries. Due to an issue in the stream recovery caching mechanism, the library repeatedly reloads t...

CVE-2026-115580

A flaw was found in pypdf. A remote attacker can cause a Denial of Service DoS by convincing a user or automated system to process a specially crafted PDF document. By specifying an excessively large entry count in the document's cross-reference table, the file triggers prolonged processing loops...

CVE-2026-115585 pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing...

EUVD-2026-109130

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing...

CVE-2026-115585

The pypdf pure-python PDF library is vulnerable to long runtimes when processing crafted PDF files containing repeated malformed cross-reference entries . In versions prior to 6.21.2 , an incomplete remediation allowed these entries to trigger a complete PDF stream reload during each recovery att...

CVE-2026-115585 pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing...

EUVD-2026-109129

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in...

PT-2026-122205

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.21.2 Description An attacker can craft a PDF file with a standard cross-reference table where the declared entry count exceeds the actual capacity of the file. When such a file is opened, it leads to excessive...

PT-2026-122206

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.21.2 Description An incomplete remediation for repeated malformed cross-reference entries allows a crafted PDF to trigger a complete PDF stream reload during each recovery attempt, even when a recovery cache is presen...

CVE-2026-113794

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0...

EUVD-2026-107335

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0...

CVE-2026-113794

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0...

PT-2026-120665

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0...

openSUSE 16 Security Update : python-PyPDF2 (openSUSE-SU-2026:21589-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21589-1 advisory. Changes in python-PyPDF2: - CVE-2026-59937: possible long runtimes for repeated malformed cross-reference entries bsc1271147 - CVE-2026-59936:...