Out-of-Bounds Write Vulnerability in LibRaw Affects JPEG DHT Parser
CVE-2026-5318

5.3MEDIUM

Key Information:

Vendor

LibRaw

Status
Libraw
Vendor
CVE Published:
2 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5318?

A vulnerability has been discovered in LibRaw up to version 0.22.0, specifically within the JPEG DHT Parser component. The flaw exists in the HuffTable::initval function, which fails to properly validate input arguments leading to an out-of-bounds write condition. This may allow an attacker to execute arbitrary code through remote exploitation. Users are strongly encouraged to upgrade to version 0.22.1, which resolves this critical issue. The public availability of an exploit poses a significant security risk, making immediate action essential.

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Affected Version(s)

LibRaw 0.1

LibRaw 0.2

LibRaw 0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5318 - Proof of Concept

References

https://vuldb.com/vuln/354650
vdb-entrytechnical-description
https://vuldb.com/vuln/354650/cti
signaturepermissions-required
https://vuldb.com/submit/780538
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

biniam (VulDB User)
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