CVE-2025-11683Medium· 6.5▾ Sunlit

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…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score36/ 100 · Low

impact 35.8 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 16, 2025

Updated

Oct 8, 2026

CVSS

6.5

Vendor

toddr

Product

yaml::syck

CWE

CWE-119

Depth score

36 · Low

EPSS

0.31% · p23

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Oct 8.

0.2% → 0.3%▲ 0.06%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 375 days

Oct 16, 2025Published
Disclosed via NVD
Oct 8, 2026Record revised
Last analysed / modified upstream
Oct 8, 2026EPSS first tracked
0.2%
Oct 26, 2026EPSS peak
0.2% → 0.3%

toddr CWE-119 #nvd

Affected

yaml::syck < 1.36

Patched in

yaml::syck 1.36

Full technical detail▾

Overview

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.

Affected

yaml::syck < 1.36

Remediation

Upgrade past the affected range:

yaml::syck 1.36

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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CVE-2025-11683Medium· 6.5▾ Sunlit

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…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score36/ 100 · Low

impact 35.8 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 16, 2025

Updated

Oct 8, 2026

CVSS

6.5

Vendor

toddr

Product

yaml::syck

CWE

CWE-119

Depth score

36 · Low

EPSS

0.31% · p23

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Oct 8.

0.2% → 0.3%▲ 0.06%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 375 days

Oct 16, 2025Published
Disclosed via NVD
Oct 8, 2026Record revised
Last analysed / modified upstream
Oct 8, 2026EPSS first tracked
0.2%
Oct 26, 2026EPSS peak
0.2% → 0.3%

toddr CWE-119 #nvd

Affected

yaml::syck < 1.36

Patched in

yaml::syck 1.36

Full technical detail▾

Overview

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.

Affected

yaml::syck < 1.36

Remediation

Upgrade past the affected range:

yaml::syck 1.36

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd