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VulnerabilityPublished Updated

CVE-2026-10827: Spectra Legacy (WordPress plugin) · Insufficient Verification of Data Authenticity

Affects Spectra Legacy (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 3.5 Low : upgrade to 2.20.0 when convenient.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 3.1 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.20.0
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Spectra Legacy (WordPress plugin) to 2.20.0.

Affected software

ProductAffectedFixed in
Spectra LegacyAffected
  • <2.20.0
Fixed in
  • 2.20.0

AI-suggested

If you cannot patch yet, restrict Contributor role permissions where possible and monitor for suspicious CSS injection attempts. Since JavaScript execution is blocked, the risk is limited to CSS injection effects.

Description

The Spectra Legacy WordPress plugin before 2.20.0 does not validate or escape several block style attributes before using them to build the CSS it outputs on the front end, allowing users with the Contributor role and above to inject arbitrary CSS into the pages that render the affected block. The injected styles are served to anonymous visitors of those pages and can force external resource loads, deface/redress the page, or exfiltrate data via CSS attribute selectors. JavaScript execution is not possible at this role (the script-tag breakout is removed by KSES), so the impact is limited to CSS injection.

References

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