VulnSocial

CVE-2026-57075General

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via a signed-char lookup-table index in syck_base64dec. The base64 decoder in the bundled libsyck indexes the 256-entry static table b64_xtable with a signed char, so any !!binary byte >= 0x80 sign-extends to a negative index and reads before the table. The decoder receives the raw bytes of any !!binary node, a standard YAML type not gated by $LoadBlessed or $LoadCode, so it is reached on the default Load path. Any caller that runs Load or LoadFile on an untrusted document containing a !!binary scalar with a high-bit byte triggers the read, and the value read can surface in the decoded result.

Back to dashboard
0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 4 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 4 signals
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked 2d ago at 2 mentions (2026-07-16); latest day: 1
  • 4 total mentions across 3 days

Deep dive

Activity timeline4 mentions / 3d
01122Mentions · 2026-07-16: 2Mentions · 2026-07-19: 1Mentions · 2026-07-20: 1Patch / Workaround · 2026-07-20: 1Technical Details · 2026-07-16: 2Technical Details · 2026-07-19: 1Technical Details · 2026-07-20: 107-1607-1907-20
Signal classification3 categories
General
250.0%
Disclosure
125.0%
Patch
125.0%
Referenced assets7 URLs
Classification over time
DateTotalLabels
2026-07-162
Disclosure1General1
2026-07-191
General1
2026-07-201
Patch1
Full discourse4 posts
  • Open Source Security mailing list@oss_security
    General

    Perl CPAN YAML::Syck before 1.47 CVE-2026-13713: Use-after-free and double-free https://www.openwall.com/lists/oss-security/2026/07/17/1 CVE-2026-57075: Out-of-bounds read https://www.openwall.com/lists/oss-security/2026/07/17/2 CVE-2026-57076: Use-after-free https://www.openwall.com/lists/oss-security/2026/07/17/3 CVE-2026-57077: Out-of-bounds read https://www.openwall.com/lists/oss-security/2026/07/17/4

    Post summary

    The post announces several new Perl CPAN YAML::Syck vulnerabilities, providing brief vulnerability type descriptors without additional PoC, exploitation, or patch details.

    1000064
    4.7K followersView on X
  • VulniPulse@vulnipulse
    Patch

    ⚠️ Red Hat Enterprise Linux 6 alert: CVE-2026-57075 (CVSS 6.5) Remote attackers could access sensitive information. Apply the vendor-recommended mitigation. https://vulnipulse.com/advisories/linux-cve-2026-57075 #Linux #RedHatEnterpriseLinux6 #CyberSecurity #CVE

    Post summary

    A CVE-2026-57075 vulnerability in Red Hat Enterprise Linux 6 (CVSS 6.5) allows remote attackers to access sensitive data; Red Hat recommends applying the vendor‑provided mitigation.

    0000031
    6 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-57075 YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via a signed-char lookup-table index in syck_base64dec. The base64 decoder in the bundled libsyc… https://www.cve.org/CVERecord?id=CVE-2026-57075 ----- Traducción: CVE-2026-57075 YAM… http://infoflow.cloud`

    Post summary

    This notice details a new out‑of‑bounds read vulnerability affecting YAML::Syck before version 1.47, offering technical specifics but no evidence of exploitation or remediation steps.

    0000028
    92 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-57075 YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via a signed-char lookup-table index in syck_base64dec. The base64 decoder in the bundled libsyc… https://www.cve.org/CVERecord?id=CVE-2026-57075

    Post summary

    The snippet reports CVE-2026-57075 as an out-of-bounds read in YAML::Syck's base64 decoder for Perl, without providing a PoC, exploit code, or patch information.

    00000688
    57.8K followersView on X

Explore more

Back to dashboard