DEBIAN-CVE-2026-113789

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0...

GHSA-6VVC-X485-93V7 pypdf: Possible long runtimes/large memory usage when retrieving form fields

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage and/or long runtimes. This requires retrieving the form fields of a document. Patches This has been fixed in pypdf==6.21.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR...

EUVD-2026-107327

pypdf: Possible long runtimes/large memory usage when retrieving form fields...

pypdf: Possible long runtimes/large memory usage when retrieving form fields

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage and/or long runtimes. This requires retrieving the form fields of a document. Patches This has been fixed in pypdf==6.21.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR...

SUSE CVE-2026-113789

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0...

CVE-2026-113789

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0...

CVE-2026-113789

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0...

CVE-2026-113789 pypdf: Possible long runtimes/large memory usage when retrieving form fields

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0...

CVE-2026-113789

The pypdf pure-python PDF library is vulnerable to uncontrolled resource consumption (CWE-400, CWE-407) in versions prior to 6.21.0 . An attacker can craft a malicious PDF file that triggers large memory usage or long runtimes when an application attempts to retrieve the document's form fields . ...

PT-2026-120660

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.21.0 Description An attacker can craft a malicious PDF file that leads to excessive memory consumption or extended processing times when an application attempts to retrieve the document's form fields. Recommendations...

pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up)

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a partially malformed /FlateDecode stream, where the byte-by-byte decompression is used. PatchesThis has been fixed in pypdf==6.18.1. WorkaroundsIf you cannot upgrade yet, consider applying t...

PYSEC-2026-4157 pypdf: Possible long runtimes when generating appearance streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires updating form field values with flattening enabled, which triggers appearance stream generation. Patches This has been fixed in pypdf==6.19.0. Workarounds If you cannot upgrade yet, consider...

pypdf: Possible long runtimes when generating appearance streams

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires updating form field values with flattening enabled, which triggers appearance stream generation. PatchesThis has been fixed in pypdf==6.19.0. WorkaroundsIf you cannot upgrade yet, consider...

PYSEC-2026-4156 pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up)

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a partially malformed /FlateDecode stream, where the byte-by-byte decompression is used. Patches This has been fixed in pypdf==6.18.1. Workarounds If you cannot upgrade yet, consider applyin...

PYSEC-2026-4153 pypdf: Possible long runtimes/large memory usage when parsing indirect objects

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires reading a PDF document with long indirect object headers, not terminated by whitespace. Patches This has been fixed in pypdf==6.18.0. Workarounds If you cannot upgrade yet, consider applying...

pypdf: Possible long runtimes/large memory usage when parsing indirect objects

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires reading a PDF document with long indirect object headers, not terminated by whitespace. PatchesThis has been fixed in pypdf==6.18.0. WorkaroundsIf you cannot upgrade yet, consider applying th...

pypdf: Possible long runtimes with large amount of embedded files

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing the embedded files through the dictionary-based API. Patches This has been fixed in pypdf==6.19.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 4081...

GHSA-V247-6F48-MGCJ pypdf: Possible long runtimes with large amount of embedded files

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing the embedded files through the dictionary-based API. Patches This has been fixed in pypdf==6.19.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 4081...

EUVD-2026-90272

pypdf: Possible long runtimes with large amount of embedded files...

GHSA-PHP9-FJ8V-98FJ pypdf: Possible long runtimes when generating appearance streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires updating form field values with flattening enabled, which triggers appearance stream generation. Patches This has been fixed in pypdf==6.19.0. Workarounds If you cannot upgrade yet, consider...