How severe is CVE-2026-106510?

CVE-2026-106510 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-106510 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-106510?

CVE-2026-106510 primarily affects Linuxfoundation Backstage Plugin-techdocs-node. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-106510?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-106510 published?

CVE-2026-106510 was published on 2026-10-07 and last updated on 2026-10-13.

CVE-2026-106510

CVE-2026-106510 is a high-severity vulnerability in Linuxfoundation Backstage Plugin-techdocs-node with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-183.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-183
Affected product: Linuxfoundation Backstage Plugin-techdocs-node
Published: 2026-10-07
Last modified: 2026-10-13

Description

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.

Frequently asked questions

What is CVE-2026-106510?: Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.
How severe is CVE-2026-106510?: CVE-2026-106510 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-106510 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-106510?: CVE-2026-106510 primarily affects Linuxfoundation Backstage Plugin-techdocs-node. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-106510?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-106510 published?: CVE-2026-106510 was published on 2026-10-07 and last updated on 2026-10-13.

References

Affected products (7)

cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:1.51.0:-:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next0:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next1:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next2:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next3:*:*:*:*:*:*

More vulnerabilities in Linuxfoundation Backstage Plugin-techdocs-node

CVE-2026-106558 — High (CVSS 8.8): Backstage is an open framework for building developer portals. Prior to 1.14.8, 1.15.6, and 2.0.1, the…
CVE-2026-88064 — High (CVSS 8.8): Backstage is an open framework for building developer portals. Prior to 1.14.6 and from 1.15.0 until 1.15.4, the…
CVE-2026-106556 — High (CVSS 7.7): Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node…
CVE-2026-106509 — High (CVSS 7.7): Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node…
CVE-2026-106505 — High (CVSS 7.7): Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the…
CVE-2026-106455 — High (CVSS 7.7): Backstage is an open framework for building developer portals. From 0.11.12 until 1.14.7 and 1.15.5, the…

All CVEs affecting Linuxfoundation Backstage Plugin-techdocs-node →

Other CWE-183 vulnerabilities

CVE-2026-3490 — Critical (CVSS 10.0): picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by…
CVE-2026-54316 — Critical (CVSS 9.1): Claude Code is an agentic coding tool. From 0.2.54 until 2.1.163, because the hostname huggingface.co was pre-approved…
CVE-2026-29514 — High (CVSS 8.8): NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the…
CVE-2026-46391 — High (CVSS 8.7): HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 9.0.1 and prior to version…
CVE-2025-53762 — High (CVSS 8.7): Permissive list of allowed inputs in Microsoft Purview allows an authorized attacker to elevate privileges over a…
CVE-2026-59802 — High (CVSS 8.2): PasswordPusher before 2.8.1 accepts data URI schemes in URL push payloads due to insufficient validation in the…

Browse all CWE-183 vulnerabilities →