CVE-2018-13258 | Tarball was missing .htaccess files

Mediawiki 1.31 before 1.31.1 misses .htaccess files in the provided tarball used to protect some directories that shouldn't be web accessible.

Published: 2018-10-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-13258 is rated Moderate Risk (50.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.06%). EPSS rose +1.92% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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-2018-13258

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 2026-06-15 0.14% 2.06% +1.92%
2 2026-01-03 0.28% 0.14% -0.14%
3 2025-12-27 — 0.28% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-13258

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-13258

GitHub Security Advisory for CVE-2018-13258

GHSA-2c28-7gwv-cpgf · Severity: medium · Ecosystem: composer — Mediawiki tarball is missing .htaccess files

OS Trackers for CVE-2018-13258

vendor priority summary link
debian unimportant CVE-2018-13258 unimportant priority: Debian including 1 source packages (mediawiki), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-13258
ubuntu negligible CVE-2018-13258 negligible priority: Ubuntu including 1 source packages (mediawiki), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 11, needs-triage 5, DNE 2, not-affected 1. https://ubuntu.com/security/CVE-2018-13258

Affected software / configurations for CVE-2018-13258

Vendor Product Version Raw CPE
mediawiki mediawiki >= 1.31.0, <= 1.31.1 cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

References for CVE-2018-13258

cvelogic Threat Intelligence