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CVE-2026-89156

Quick assessment

Affected

PCRE PCRE2

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.

PCRE2是pcre团队开源的一个提供正则表达式解析与模式匹配能力的软件库。 PCRE2 10.48之前版本存在缓冲区错误漏洞，该漏洞源于JIT回退后PCRE2_match越界读取，攻击者可提供无效UTF数据。

CVSS 2.9 · Low EPSS 0.29% · P22 Updated Sep 15, 2026

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 1

Vendor	Product	Version Range	Status
PCRE	PCRE2	`10.34< 10.48`	affected

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I. Basic Information for CVE-2026-89156

Vulnerability Information

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Vulnerability Title

N/A

Source: CVE Program / CVE List V5

Vulnerability Description

PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存读

Source: CVE Program / CVE List V5

Vulnerability Title

PCRE2 缓冲区错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

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
PCRE	PCRE2	10.34 ~ 10.48	-

II. Public POCs for CVE-2026-89156

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-89156

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Vendor Advisories for CVE-2026-89156 (1)

🔗 PCRE2: out-of-bounds read in pcre2_match() after JIT fallback with invalid UTF · Advisory · PCRE2Project/pcre2 · GitHub Read full article

Vendor Pages for CVE-2026-89156 (1)

🔗 Release PCRE2 10.48 · PCRE2Project/pcre2 · GitHub Read full article

https://www.cve.org/CVERecord?id=CVE-2026-89156

Same Patch Batch · PCRE · 2026-09-11 · 6 CVEs total

CVE-2026-89161	7.4 HIGH	PCRE2 资源管理错误漏洞
CVE-2026-89158	6.5 MEDIUM	PCRE2 数字错误漏洞
CVE-2026-89157	5.7 MEDIUM	PCRE2 数字错误漏洞
CVE-2026-89160	3.7 LOW	PCRE2 缓冲区错误漏洞
CVE-2026-89162	2.9 LOW	PCRE2 权限许可和访问控制问题漏洞

IV. Related Vulnerabilities

Same product: PCRE2

Same vendor: PCRE

Same weakness: CWE-125