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2 vulnerabilities found for YAML::Syck by TODDR
CVE-2026-4177 (GCVE-0-2026-4177)
Vulnerability from cvelistv5
Published
2026-03-16 22:30
Modified
2026-03-17 14:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-122 - Heap-based Buffer Overflow
Summary
YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter.
The heap overflow occurs when class names exceed the initial 512-byte allocation.
The base64 decoder could read past the buffer end on trailing newlines.
strtok mutated n->type_id in place, corrupting shared node data.
A memory leak occurred in syck_hdlr_add_anchor when a node already had an anchor. The incoming anchor string 'a' was leaked on early return.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| TODDR | YAML::Syck |
Version: 0 < |
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CVE-2025-11683 (GCVE-0-2025-11683)
Vulnerability from cvelistv5
Published
2025-10-16 00:14
Modified
2025-10-16 13:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Summary
YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure
Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read
The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| TODDR | YAML::Syck |
Version: 0 < 1.36 |
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