PCRE PCRE2 up to 10.47 JIT Fallback pcre2_match out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in PCRE PCRE2 up to 10.47. This affects the function pcre2_match of the component JIT Fallback. Such manipulation leads to out-of-bounds. This vulnerability is traded as CVE-2026-89156. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in PCRE PCRE2 up to 10.47. It has been rated as critical. Affected by this issue is the function pcre2_match of the component JIT Fallback. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-89156 since 09/11/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 366075 (Rocky Linux 10.2 [CIQ] Security Update: pcre2 / pcre2-debuginfo / pcre2-debugsource / pcre2-devel / etc Multiple Vulnerabilities (crlsa-2026_81522)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.48 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (366075) and CERT Bund (WID-SEC-2026-3334). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Debian Linux
• Red Hat Enterprise Linux
• RESF Rocky Linux
• SUSE Linux
• Oracle Linux
• Open Source PCRE (Perl Compatible Regular Expressions)

Productinfo

Type

• Programming Tool Software

Vendor

• PCRE

Name

• PCRE2

Version

• 10.0
• 10.1
• 10.2
• 10.3
• 10.4
• 10.5
• 10.6
• 10.7
• 10.8
• 10.9
• 10.10
• 10.11
• 10.12
• 10.13
• 10.14
• 10.15
• 10.16
• 10.17
• 10.18
• 10.19
• 10.20
• 10.21
• 10.22
• 10.23
• 10.24
• 10.25
• 10.26
• 10.27
• 10.28
• 10.29
• 10.30
• 10.31
• 10.32
• 10.33
• 10.34
• 10.35
• 10.36
• 10.37
• 10.38
• 10.39
• 10.40
• 10.41
• 10.42
• 10.43
• 10.44
• 10.45
• 10.46
• 10.47

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔒

CNA Base Score: 2.9
CNA Vector (MITRE): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 366075
Nessus Name: Rocky Linux 10.2 [CIQ] Security Update: pcre2 / pcre2-debuginfo / pcre2-debugsource / pcre2-devel / etc Multiple Vulnerabilities (crlsa-2026_81522)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PCRE2 10.48

Timelineinfo

09/11/2026 Advisory disclosed
09/11/2026 +0 days CVE reserved
09/11/2026 +0 days VulDB entry created
10/19/2026 +38 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-89156 (🔒)
GCVE (CVE): GCVE-0-2026-89156
GCVE (VulDB): GCVE-100-402344
CERT Bund: WID-SEC-2026-3334 - PCRE2 (Perl Compatible Regular Expressions): Mehrere Schwachstellen

Entryinfo

Created: 09/11/2026 06:35
Updated: 10/19/2026 18:20
Changes: 09/11/2026 06:35 (66), 09/15/2026 06:54 (7), 09/19/2026 07:36 (11), 10/15/2026 19:37 (2), 10/19/2026 18:20 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

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