Security Vulnerabilities
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-09-30
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-09-30
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string tokens in a font /ToUnicode mapping, causing pypdf/_cmap.py parse_bfchar to decode and retain oversized values during operations such as text extraction and consume excessive memory. This is a second follow-up to earlier /ToUnicode resource-consumption fixes and is limited to the remaining token-length path. This issue is fixed in version 6.18.1.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-09-30
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-09-30
A system notification template on the Kiteworks appliance was rendered by a template engine that evaluated expressions contained in the stored template body. An authenticated System Administrator could potentially store a crafted template that executed operating-system commands on the appliance when the notification was next sent.
CVSS Score
7.2
EPSS Score
0.012
Published
2026-09-30
An unauthenticated attacker could cause a file with attacker-controlled content to be written to the appliance filesystem through an administrative upload handler that did not properly authenticate the request. This did not by itself result in code execution, which would require a separate vulnerability to place the file in an executable location.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-30
A resource exhaustion vulnerability in Kiteworks Email Protection Gateway allowed an unauthenticated remote attacker to repeatedly trigger a comparatively expensive server-side operation, causing a partial denial of service.
CVSS Score
5.3
EPSS Score
0.004
Published
2026-09-30
An authenticated administrator could cause the server to issue requests to, and interact with, internal network services that are not meant to be reachable through this interface. On its own this did not result in code execution.
CVSS Score
6.6
EPSS Score
0.003
Published
2026-09-30
An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service.
CVSS Score
6.5
EPSS Score
0.01
Published
2026-09-30
A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to store crafted content that later executes arbitrary JavaScript in the authenticated session of an administrator who views the affected page. This could have permitted the attacker to gain full administrative control, including the creation of a new administrative account.
CVSS Score
9.3
EPSS Score
0.005
Published
2026-09-30