CVE-2026-52887: NocoBase: SQL injection in /api/myInAppChannels:list filter to PG-superuser RCE

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
• EPSS 0.9%, percentile 59: FIRST’s model estimates a 0.9% chance of exploitation activity in the next 30 days, higher than 59% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Only applies if your dependency tree includes @nocobase/plugin-notification-in-app-message (npm) <= 2.0.60, fixed in 2.0.61. Check your lockfile, including transitive dependencies.

What it is

NocoBase is an AI-powered no-code/low-code platform for building business applications and enterprise solutions. Prior to 2.0.61, NocoBase @nocobase/plugin-notification-in-app-message exposed GET /api/myInAppChannels:list, where the filter[latestMsgReceiveTimestamp][$lt] value was inserted into a Sequelize.literal() template string without escaping or parameter binding, allowing a signed-up authenticated user to run stacked PostgreSQL statements and potentially execute commands with COPY ... TO PROGRAM. This vulnerability is fixed in 2.0.61.

From the GitHub advisory

Summary

GET /api/myInAppChannels:list accepts a structured filter query parameter. The handler for the latestMsgReceiveTimestamp field splices the $lt value directly into a Sequelize.literal() template string with no escape, type cast, or parameter binding. The action ACL is loggedIn, so any authenticated account reaches it. The default auth-basic authenticator ships allowSignUp: true, so the account is obtainable anonymously.

The injection is reachable with the URL parameter filter[latestMsgReceiveTimestamp][$lt]= . The pg driver in front of Sequelize accepts stacked statements, so the chain extends from boolean and timing oracles to multi-statement payloads.

The shipped docker-compose.yml creates the DB role nocobase on a stock postgres:16 image, which assigns the rolsuper attribute by default. COPY ... TO PROGRAM '...' therefore runs shell commands as uid=999(postgres) inside the database container.

Result: any anonymous visitor signs up, signs in, and exfiltrates arbitrary rows or executes shell commands inside the database container with one HTTP GET after the sign-in.

Weakness type: CWE-89.

Product: @nocobase/plugin-notification-in-app-message (npm) · Assigned by: GitHub_M · Published: 2026-07-15

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation poc, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 0.89% probability of exploitation activity in the next 30 days; percentile 59.

Timeline

• 2026-07-15 — CVE record published by GitHub_M
• 2026-07-20 — CVE record last updated
• 2026-07-31 — GitHub-reviewed advisory GHSA-p849-8hwh-84j9 published (critical)

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-p849-8hwh-84j9 github.com
2. CVE.org record CVE-2026-52887 cve.org
3. NVD entry CVE-2026-52887 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com
2. github.com github.com
3. github.com github.com
4. github.com github.com

Critical npm advisories · Today’s Security Digest