Sereal::Encoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library
Published Mar 31, 2026
8.1
HIGHCVSS 3.1
EPSS 0.36%
Description
Sereal::Encoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library.
Sereal::Encoder embeds a version of the Zstandard (zstd) library that is vulnerable to CVE-2019-11922. This is a race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.
Affected products
-
- Version 4.000StatusaffectedConstraints<=4.009_002
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| YVES | Sereal::Encoder | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to Sereal::Encoder version 4.010 or later.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Mar 31, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Mar–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.36% (0.00355) | 26.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00355) | 27.14th | v5 (v2026.06.15) |
| Mar 31, 2026 | 0.02% (0.00017) | 3.91th | v4 (v2025.03.14) |
References (3)
- https://github.com/advisories/GHSA-w77f-wv46-4vcx vendor-advisoryNot Applicable
- https://metacpan.org/release/YVES/Sereal-Encoder-4.010/changes release-notesRelease Notes
- https://www.cve.org/CVERecord?id=CVE-2019-11922 vendor-advisoryNot Applicable
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-w77f-wv46-4vcx | vendor-advisoryNot Applicable | |
| https://metacpan.org/release/YVES/Sereal-Encoder-4.010/changes | release-notesRelease Notes | |
| https://www.cve.org/CVERecord?id=CVE-2019-11922 | vendor-advisoryNot Applicable |
Change history (0)
No recorded changes yet.