Quickjs
CVE-2026-1145
LOW
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 6.3 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitable via remote/network. Public exploit/POC available. |
| Exploit ScenarioDerived | A remote attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Heap-based buffer overflow in QuickJS up to version 0.11.0 within the js_typed_array_constructor_ta function allows remote attackers to corrupt memory and potentially achieve code execution with user interaction. Public exploit code exists for this vulnerability, increasing practical attack risk. A patch is available and should be applied immediately.
Earlier versions of this analysis (1)
A flaw has been found in quickjs-ng quickjs up to 0.11.0. Affected by this vulnerability is the function js_typed_array_constructor_ta of the file quickjs.c. [CVSS 6.3 MEDIUM]
RemediationAI
A vendor patch is available — apply it immediately. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-119 (Buffer Overflow). Affects Quickjs. A flaw has been found in quickjs-ng quickjs up to 0.11.0. Affected by this vulnerability is the function js_typed_array_constructor_ta of the file quickjs.c. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 53aebe66170d545bb6265906fe4324e4477de8b4. It is suggested to install a patch to address this issue.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
Sources disagree (Low–High)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorNVD
Lifecycle Timeline
5DescriptionCVE.org
A flaw has been found in quickjs-ng quickjs up to 0.11.0. Affected by this vulnerability is the function js_typed_array_constructor_ta of the file quickjs.c. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 53aebe66170d545bb6265906fe4324e4477de8b4. It is suggested to install a patch to address this issue.
Executive ViewAI
Organizations using quickjs-ng quickjs should be aware of moderate risk from CVE-2026-1145, a buffer overflow vulnerability rated CVSS 6.3. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Affected Products (CPE)CVE.org
A use-after-free in QuickJS's quickjs-libc standard library lets JavaScript code corrupt heap memory from inside the int
Use-after-free in QuickJS object-printing routines can corrupt memory when an attacker-influenced Array, Map, or Set is
QuickJS commit 2788d71 was discovered to contain a stack-overflow via the component js_proxy_isArray at quickjs.c. Rated
Heap out-of-bounds write in QuickJS's BigInt string parser can corrupt memory when an embedding application converts an
Integer overflow in QuickJS's libregexp bytecode accounting can become an out-of-bounds write when a crafted recursive r
Type confusion in QuickJS's handling of the string addition (+) operation allows local attackers to trigger out-of-bound
Information disclosure in QuickJS occurs through a floating-point precision error in TypedArray.prototype.indexOf() when
An out-of-bounds heap read in QuickJS's BigInt-to-string conversion (js_bigint_to_string1) lets script-controlled BigInt
Heap out-of-bounds write in QuickJS's bytecode deserializer (JS_ReadFunctionTag) lets a crafted serialized blob corrupt
quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overfl
quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer
Heap-based buffer overflow in QuickJS up to version 0.11.0 within the js_typed_array_constructor function allows unauthe
Exploit-DB