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1 vulnerability by libucl
CVE-2026-0708 (GCVE-0-2026-0708)
Vulnerability from cvelistv5 – Published: 2026-03-17 02:28 – Updated: 2026-03-17 02:44
VLAI?
Title
Libucl: libucl: denial of service via embedded null byte in ucl input
Summary
A flaw was found in libucl. A remote attacker could exploit this by providing a specially crafted Universal Configuration Language (UCL) input that contains a key with an embedded null byte. This can cause a segmentation fault (SEGV fault) in the `ucl_object_emit` function when parsing and emitting the object, leading to a Denial of Service (DoS) for the affected system.
Severity ?
8.3 (High)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
Date Public ?
2025-05-15 00:00
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"providerMetadata": {
"dateUpdated": "2026-03-17T02:44:16.527Z",
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"time": "2026-01-08T03:30:46.275Z",
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"title": "Libucl: libucl: denial of service via embedded null byte in ucl input",
"workarounds": [
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"value": "To mitigate this issue, applications utilizing `libucl` should avoid processing untrusted input that contains keys with embedded null bytes, especially when operating in `UCL_PARSER_ZEROCOPY` mode. Restricting input to trusted sources can reduce exposure."
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