Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-34979— OpenPrinting CUPS: Heap overflow in `get_options()`

Quick assessment

Affected
OpenPrinting cups
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenPrinting CUPS是OpenPrinting公司的一个适用于 Linux® 和其他类 Unix® 操作系统的基于标准的开源打印系统。 OpenPrinting CUPS 2.4.16及之前版本存在安全漏洞，该漏洞源于CUPS调度程序在从作业属性构建过滤器选项字符串时存在基于堆的缓冲区溢出。

CVSS 5.3 · Medium EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-34979

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenPrinting CUPS: Heap overflow in `get_options()`
Source: CVE Program / CVE List V5
Vulnerability Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
OpenPrinting CUPS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenPrinting CUPS是OpenPrinting公司的一个适用于 Linux® 和其他类 Unix® 操作系统的基于标准的开源打印系统。 OpenPrinting CUPS 2.4.16及之前版本存在安全漏洞，该漏洞源于CUPS调度程序在从作业属性构建过滤器选项字符串时存在基于堆的缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenPrinting cups <= 2.4.16 -

II. Public POCs for CVE-2026-34979

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-34979

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-34979 (1)

Same Patch Batch · OpenPrinting · 2026-04-03 · 5 CVEs total

CVE-2026-34978 6.5 MEDIUM OpenPrinting CUPS: Path traversal in RSS notify-recipient-uri enables file write outside C
CVE-2026-27447 4.8 MEDIUM OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup
CVE-2026-34980 OpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` co
CVE-2026-34990 OpenPrinting CUPS: Local print admin token disclosure using temporary printers

IV. Related Vulnerabilities

Same product: cups
Same vendor: OpenPrinting
Same weakness: CWE-122

V. Comments for CVE-2026-34979

No comments yet

Leave a comment