CVE-2023-49781: nocodb XSS — Exploit & Fix

Description

NocoDB is software for building databases as spreadsheets. Prior to 0.202.9, a stored cross-site scripting vulnerability exists within the Formula virtual cell comments functionality. 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. This vulnerability is fixed in 0.202.9.

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CVSS v3.1 Score

7.3

HIGH

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
nocodb	nocodb	< 0.202.9

References

Advisories & Patches

https://github.com/nocodb/nocodb/commit/7f58ce3726dfec71537d8b80474a0f95a48a1574 https://github.com/nocodb/nocodb/security/advisories/GHSA-h6r4-xvw6-jc5h https://github.com/nocodb/nocodb/commit/7f58ce3726dfec71537d8b80474a0f95a48a1574 https://github.com/nocodb/nocodb/security/advisories/GHSA-h6r4-xvw6-jc5h

Exploits

https://github.com/nocodb/nocodb/security/advisories/GHSA-h6r4-xvw6-jc5h https://github.com/nocodb/nocodb/security/advisories/GHSA-h6r4-xvw6-jc5h

Frequently Asked Questions

What is CVE-2023-49781? +

NocoDB is software for building databases as spreadsheets. Prior to 0.202.9, a stored cross-site scripting vulnerability exists within the Formula virtual cell comments functionality. 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. This vulnerability is fixed in 0.202.9. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2023-49781? +

CVE-2023-49781 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-49781? +

CVE-2023-49781 affects products from nocodb, specifically: nocodb. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-49781? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-49781