CVE-2026-88390
Last modified
CVE-2026-88390 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. An out-of-bounds write vulnerability in jslGetTokenValueAsString() in Espruino 2v29 (commit bffc6d0) allows crafted JavaScript input containing an overlong token to trigger a one-byte write beyond the JsLex.token buffer in RELEASE/NO_ASSERT builds. The out-of-bounds write corrupts the adjacent tokenValue pointer, resulting in memory corruption and potentially causing application crashes or denial of service..
Description
An out-of-bounds write vulnerability in jslGetTokenValueAsString() in Espruino 2v29 (commit bffc6d0) allows crafted JavaScript input containing an overlong token to trigger a one-byte write beyond the JsLex.token buffer in RELEASE/NO_ASSERT builds. The out-of-bounds write corrupts the adjacent tokenValue pointer, resulting in memory corruption and potentially causing application crashes or denial of service.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | — | n/a |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-88390?
How severe is CVE-2026-88390?
How do I fix CVE-2026-88390?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-88385Mini-XML 4.0.5 contains a memory leak vulnerability in mxml_…6.5
- CVE-2026-88386libsndfile 1.2.2 contains a misaligned memory access issue i…5.5
- CVE-2026-88387LibRaw 0.22.0 contains an incorrect numeric conversion vulne…5.5
- CVE-2026-88388Espruino 2v29 (commit bffc6d0) contains a stack-based buffer…7.5
- CVE-2026-88389Espruino 2v29 (commit bffc6d0) contains a NULL pointer deref…6.2
- CVE-2026-8839The MapPress Maps for WordPress plugin for WordPress is vuln…5.3
- CVE-2026-88391Northstar (dromara/northstar, quantitative trading platform)…9.8
- CVE-2026-88392Unimall v4 is vulnerable to Directory Traversal in FileUploa…7.5
- CVE-2026-88393WookTeam v1.6.6 and before is vulnerable to RCE in the proje…9.8
- CVE-2026-88394WookTeam v1.6.6 and before is vulnerable to a Directory Trav…7.5
- CVE-2026-88395GouGuOA v6.0.5 and before is vulnerable to SQL Injection in …9.8
- CVE-2026-88396ApiAdmin v5.0 and before is vulnerable to Directory Traversa…7.2
Are you affected by CVE-2026-88390?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST