CVE-2018-0505 | BotPasswords can bypass CentralAuth's account lock

Exp

Mediawiki 1.31 before 1.31.1, 1.30.1, 1.29.3 and 1.27.5 contains a flaw where BotPasswords can bypass CentralAuth's account lock

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-2018-0505 is rated High Exploit Risk (69.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.92%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.49% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2018-0505

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-0505

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 0.43% 1.92% +1.49%
2 2025-12-28 0.51% 0.43% -0.08%
3 2025-12-27 — 0.51% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-0505

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2018-0505

GitHub Security Advisory for CVE-2018-0505

GHSA-5c6w-f4w2-2grp · Severity: medium · Ecosystem: composer — Mediawiki BotPassword can bypass CentralAuth's account lock

OS Trackers for CVE-2018-0505

vendor priority summary link
debian not yet assigned CVE-2018-0505 not yet assigned 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-2018-0505
redhat low — https://access.redhat.com/security/cve/CVE-2018-0505
ubuntu medium CVE-2018-0505 medium 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): not-affected 15, DNE 2, needed 1, released 1. https://ubuntu.com/security/CVE-2018-0505

Affected software / configurations for CVE-2018-0505

Vendor Product Version Raw CPE
mediawiki mediawiki >= 1.31.0, < 1.31.1 cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
mediawiki mediawiki 1.27.5 cpe:2.3:a:mediawiki:mediawiki:1.27.5:*:*:*:*:*:*:*
mediawiki mediawiki 1.29.3 cpe:2.3:a:mediawiki:mediawiki:1.29.3:*:*:*:*:*:*:*
mediawiki mediawiki 1.30.1 cpe:2.3:a:mediawiki:mediawiki:1.30.1:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2018-0505

cvelogic Threat Intelligence