CVE-2023-26735

blackbox_exporter v0.23.0 was discovered to contain an access control issue in its probe interface. This vulnerability allows attackers to detect intranet ports and services, as well as download resources. NOTE: this is disputed by third parties because authentication can be configured.

Published: 2023-04-26 Last update: 2025-02-04 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-26735 is rated Moderate Risk (46.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.25%). 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-2023-26735

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 2026-01-18 0.25% 0.25% +0.01%
2 2025-11-21 0.40% 0.25% -0.15%
3 2025-11-18 — 0.40% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-26735

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-26735

GitHub Security Advisory for CVE-2023-26735

GHSA-939c-3g97-vpvv · Severity: high · Ecosystem: go — Withdrawn Advisory: Access control issues in blackbox_exporter

OS Trackers for CVE-2023-26735

vendor priority summary link
debian unimportant CVE-2023-26735 unimportant priority: Debian including 1 source packages (prometheus-blackbox-exporter), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2023-26735
ubuntu low CVE-2023-26735 low priority: Ubuntu including 1 source packages (prometheus-blackbox-exporter), 10 status rows across 10 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): ignored 5, not-affected 4, needs-triage 1. https://ubuntu.com/security/CVE-2023-26735

Affected software / configurations for CVE-2023-26735

Vendor Product Version Raw CPE
prometheus blackbox_exporter 0.23.0 cpe:2.3:a:prometheus:blackbox_exporter:0.23.0:*:*:*:*:*:*:*

References for CVE-2023-26735

cvelogic Threat Intelligence