Skip to content
Noroxi
NVD / CVE Program· CNA WPScan

CVE-2026-77783: Rank Math SEO < 1.0.277 - Unauthenticated Non-Public Post Schema and Content Disclosure

Noroxi assessment

Priority: Monitor (action score 14/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Unknown Rank Math SEO 1.0.277.

Low priority for now. Upgrade to Unknown Rank Math SEO 1.0.277 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The Rank Math SEO WordPress plugin before 1.0.277 does not verify that the post whose schema it renders on the front end is publicly viewable, allowing unauthenticated visitors to disclose the schema and associated content of draft, pending, private, scheduled and password-protected posts.

LowCVSS 3.7 · v3.1—No exploit Fix available
Published
Sep 2, 2026
Updated
Sep 3, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

14

Monitor

Low priority for now.

CVSS
14 / 40 · 3.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Is Rank Math SEO – AI SEO Tools to Dominate SEO Rankings on your site?

WP Lens reads your site's plugin, theme and WordPress versions from the outside and matches them to known vulnerabilities. Works without an account.

Follow CVE-2026-77783

Is Rank Math SEO – AI SEO Tools to Dominate SEO Rankings on your site?

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for unknown records
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (WPScan). Independent of NVD's CPE analysis and usually ahead of it.

  • Unknown Rank Math SEO

    • 1.0.48 and later · before 1.0.277affected · semver

Same product

unknown: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-104752Rank Math SEO < 1.0.280 - Admin+ Arbitrary File Upload to RCE via Settings Import
    28Monitor
  • CVE-2026-104751Rank Math SEO < 1.0.280 - Unauthenticated SEO Analyzer Results Deletion
    21Monitor
  • CVE-2026-77782Rank Math SEO < 1.0.277.1 - Unauthenticated Password-Protected Post Content Disclosure via Post Metadata and llms.txt
    21Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-77786Aug 29, 2026 · Rank Math SEO < 1.0.277 - Editor+ Core Settings Modification via fix-site-seo Ability
    19Monitor
  • Later →CVE-2026-77784Sep 2, 2026 · Rank Math SEO < 1.0.277 - Author+ Robots and Pillar Content Meta Update on Non-Owned Objects via mark_page_as
    10Monitor
  • Later →CVE-2026-77785Sep 2, 2026 · Rank Math SEO < 1.0.277 - Author+ Non-Public Post Content Disclosure via Abilities API
    10Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Unknown Rank Math SEO1.0.277Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-777880 days apartRank Math SEO < 1.0.277 - Author+ Arbitrary Post and User Metadata Overwrite via updateSchemas
    19Monitor
  • CVE-2026-777840 days apartRank Math SEO < 1.0.277 - Author+ Robots and Pillar Content Meta Update on Non-Owned Objects via mark_page_as
    10Monitor
  • CVE-2026-777850 days apartRank Math SEO < 1.0.277 - Author+ Non-Public Post Content Disclosure via Abilities API
    10Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-639 · Authorization Bypass Through User-Controlled Key

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

nvd-secondary

Root cause

The endpoint fetches the record by the ID sent in the request, but never checks whether the record belongs to the requesting user.

The bug in code

The whole CWE-639 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const invoice = await Invoice.findById(req.params.id);res.json(invoice);

Fixed

ts
const invoice = await Invoice.findOne({  id: req.params.id,  ownerId: req.user.id,});if (!invoice) return res.sendStatus(404);res.json(invoice);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records