CVE-2026-34979— OpenPrinting CUPS: Heap overflow in `get_options()`
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I. Basic Information for CVE-2026-34979
Vulnerability Information
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Vulnerability Title
OpenPrinting CUPS: Heap overflow in `get_options()`
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
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
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|---|
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- Heap overflow in `get_options()` · Advisory · OpenPrinting/cups · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-34979
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
- CVE-2026-41079
OpenPrinting CUPS: Heap out-of-bounds read in SNMP supply-le - CVE-2026-39316
CUPS has a use-after-free in `cupsdDeleteTemporaryPrinters` - CVE-2026-39314
CUPS has an integer underflow in `_ppdCreateFromIPP` causes - CVE-2026-34980
OpenPrinting CUPS: Shared PostScript queue lets anonymous Pr - CVE-2026-34978
OpenPrinting CUPS: Path traversal in RSS notify-recipient-ur
Same vendor: OpenPrinting
- CVE-2026-41079
OpenPrinting CUPS: Heap out-of-bounds read in SNMP supply-le - CVE-2026-39316
CUPS has a use-after-free in `cupsdDeleteTemporaryPrinters` - CVE-2026-39314
CUPS has an integer underflow in `_ppdCreateFromIPP` causes - CVE-2026-34980
OpenPrinting CUPS: Shared PostScript queue lets anonymous Pr - CVE-2026-34978
OpenPrinting CUPS: Path traversal in RSS notify-recipient-ur
Same weakness: CWE-122
- CVE-2026-8261
Squirrel sqobject.cpp Load heap-based overflow - CVE-2026-8213
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow - CVE-2026-8212
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading
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