CVE-2026-88389: n/a
Espruino 2v29 (commit bffc6d0) has a NULL pointer dereference vulnerability in the jslGetRawString() function. This flaw occurs when crafted raw or binary string input causes the lexer to pass a NULL iterator target to jsvLockAgain(). In RELEASE/NO_ASSERT builds, the lack of an assertion guard allows a write through the NULL pointer, leading to memory corruption and potential application termination or denial of service.
AI Analysis
Technical Summary
The vulnerability in Espruino 2v29 (commit bffc6d0) is a NULL pointer dereference in the jslGetRawString() function located in src/jslex.c. Specifically, crafted raw or binary string inputs can cause the lexer to pass a NULL iterator target to the jsvLockAgain() function. In builds compiled with RELEASE or NO_ASSERT options, the missing assertion guard permits a write operation through the NULL pointer, which results in memory corruption. This can cause the application to terminate unexpectedly or lead to denial of service conditions.
Potential Impact
Exploitation of this vulnerability can cause memory corruption, which may result in application crashes or denial of service. There is no indication of code execution or data leakage from the provided information.
Mitigation Recommendations
A patch is available for this vulnerability. Users should apply the official fix provided by the vendor. Since this is a cloud service, the vendor manages remediation for the cloud-hosted service; users should consult the vendor advisory for confirmation and ensure their deployments are updated accordingly.
CVE-2026-88389: n/a
Description
Espruino 2v29 (commit bffc6d0) has a NULL pointer dereference vulnerability in the jslGetRawString() function. This flaw occurs when crafted raw or binary string input causes the lexer to pass a NULL iterator target to jsvLockAgain(). In RELEASE/NO_ASSERT builds, the lack of an assertion guard allows a write through the NULL pointer, leading to memory corruption and potential application termination or denial of service.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Espruino 2v29 (commit bffc6d0) is a NULL pointer dereference in the jslGetRawString() function located in src/jslex.c. Specifically, crafted raw or binary string inputs can cause the lexer to pass a NULL iterator target to the jsvLockAgain() function. In builds compiled with RELEASE or NO_ASSERT options, the missing assertion guard permits a write operation through the NULL pointer, which results in memory corruption. This can cause the application to terminate unexpectedly or lead to denial of service conditions.
Potential Impact
Exploitation of this vulnerability can cause memory corruption, which may result in application crashes or denial of service. There is no indication of code execution or data leakage from the provided information.
Mitigation Recommendations
A patch is available for this vulnerability. Users should apply the official fix provided by the vendor. Since this is a cloud service, the vendor manages remediation for the cloud-hosted service; users should consult the vendor advisory for confirmation and ensure their deployments are updated accordingly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T00:00:00.000Z
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6ab68639f7a7c54106e387f4
Added to database: 09/25/2026, 14:33:29 UTC
Last enriched: 09/25/2026, 14:47:49 UTC
Last updated: 09/25/2026, 15:35:38 UTC
Views: 5
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