The Ultimate Multisite WordPress plugin before 2.17.2 does not validate a user-supplied value used to select a file to include, allowing unauthenticated attackers to include and read arbitrary local files, including the WordPress configuration file.
CVE-2026-107508
UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: —CVSS v2: —Exploit: None knownExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
The CVE record's CNA (WPScan) lists Ultimate Multisite versions before 2.17.2 as affected. No release containing a fix is confirmed on record.
- CVSS v3
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- EchelonGraph score
- Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
- EG Score
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- EG Risk
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- EPSS PROB
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- EPSS %ILE
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- KEV
- Not listed
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
October 14, 2026
Last Modified
October 14, 2026
References (1)
- contact@wpscanhttps://wpscan.com/vulnerability/2b2808d3-b3fc-41d4-8be5-82d222911bc6/Exploit · VDB Entry · Technical Description
Data Freshness Timeline
(refreshed 3× in last 7d / 3× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-14 07:25 UTCNVD update
- 2026-10-14 06:35 UTCEG score recompute
- 2026-10-14 06:34 UTCMITRE cvelistV5first tracked
Frequently asked(3)
What is CVE-2026-107508?
CVE-2026-107508 is a vulnerability whose severity is not yet rated; its CVE record was published on October 14, 2026. The Ultimate Multisite WordPress plugin before 2.17.2 does not validate a user-supplied value used to select a file to include, allowing unauthenticated attackers to include and read arbitrary local files, including the WordPress configuration file.
When was the CVE record for CVE-2026-107508 published?
The CVE record for CVE-2026-107508 was published on October 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
How do I remediate CVE-2026-107508?
No fix for CVE-2026-107508 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix. The CVE record's CNA (WPScan) lists Ultimate Multisite versions before 2.17.2 as affected. No release containing a fix is confirmed on record.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-107508
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