CVE-2025-58058 | github.com/ulikunitz/xz leaks memory when decoding a corrupted multiple LZMA archives

xz is a pure golang package for reading and writing xz-compressed files. Prior to version 0.5.14, it is possible to put data in front of an LZMA-encoded byte stream without detecting the situation while reading the header. This can lead to increased memory consumption because the current implementation allocates the full decoding buffer directly after reading the header. The LZMA header doesn't include a magic number or has a checksum to detect such an issue according to the specification. Note that the code recognizes the issue later while reading the stream, but at this time the memory allocation has already been done. This issue has been patched in version 0.5.14.

Published: 2025-08-28 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-58058 is rated Low Risk (23.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-58058

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 0.05% 0.03% -0.03%
2 2026-01-29 0.04% 0.05% +0.01%
3 2026-01-27 — 0.04% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-58058

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2025-58058

GitHub Security Advisory for CVE-2025-58058

GHSA-jc7w-c686-c4v9 · Severity: medium · Ecosystem: go — github.com/ulikunitz/xz leaks memory when decoding a corrupted multiple LZMA archives

OS Trackers for CVE-2025-58058

vendor priority summary link
debian not yet assigned CVE-2025-58058 not yet assigned priority: Debian including 1 source packages (golang-github-ulikunitz-xz), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2025-58058
redhat medium — https://access.redhat.com/security/cve/CVE-2025-58058
suse medium CVE-2025-58058 severity moderate: SUSE including 78 source package names (1.1.0-1.1:trivy-0.67.2-150000.1.6.1, 2.2.1-5.22:libaudit1-3.1.1-slfo.1.1_2.1, …), 355 product×package rows across 91 product lines (Container private-registry/harbor-trivy-adapter, Container suse/sl-micro/6.0/baremetal-os-container, … (91 product lines)): Known Not Affected 180, Fixed 174, First Fixed 1. https://www.suse.com/security/cve/CVE-2025-58058/
ubuntu medium CVE-2025-58058 medium priority: Ubuntu including 1 source packages (golang-github-ulikunitz-xz), 6 status rows across 6 suites (focal, jammy, noble, plucky, questing, upstream): needs-triage 5, ignored 1. https://ubuntu.com/security/CVE-2025-58058

Affected software / configurations for CVE-2025-58058

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-58058

cvelogic Threat Intelligence