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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-93312— Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference

Quick assessment

Affected
Freedesktop Poppler
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.

在 Freedesktop Poppler 26.07.0 中发现了一个漏洞。该漏洞影响 poppler/JBIG2Stream.cc 文件中的 JBIG2Stream::rewind 函数。此缺陷可导致空指针解引用。攻击者可能通过远程方式发起攻击。该漏洞的利用代码已公开，可能存在被实际利用的风险。建议将软件升级至 26.08.0 版本以修复此问题。相关补丁提交名为：5e49250f13b0390edeb3f90eb4c02c9941f97067。建议对受影响的组件进行升级。

CVSS 4.3 · Medium

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-2026-93312

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Freedesktop Poppler 26.07.0. Impacted is the function JBIG2Stream::rewind of the file poppler/JBIG2Stream.cc. This manipulation causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. Upgrading to version 26.08.0 is recommended to address this issue. Patch name: 5e49250f13b0390edeb3f90eb4c02c9941f97067. Upgrading the affected component is advised.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Freedesktop Poppler 26.07.0 cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-93312

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-93312

请登录查看更多情报信息。

Other References for CVE-2026-93312 (5)

Same Patch Batch · Freedesktop · 2026-09-18 · 4 CVEs total

CVE-2026-93313 6.3 MEDIUM Freedesktop Poppler JBIG2Stream.cc readCodeTableSeg integer overflow
CVE-2026-93314 6.3 MEDIUM Freedesktop Poppler FoFiTrueType.cc mapCodeToGID integer overflow
CVE-2026-93311 4.3 MEDIUM Freedesktop Poppler SampledFunction Function.cc integer overflow

IV. Related Vulnerabilities

Same product: Poppler
Same vendor: Freedesktop
Same weakness: CWE-476

V. Comments for CVE-2026-93312

No comments yet

Leave a comment