What is CVE-2022-23640?

CVE-2022-23640 is a critical-severity vulnerability in Excel Streaming Reader Project, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2022-03-02.

How severe is CVE-2022-23640?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in Excel Streaming Reader Project

CVE-2022-23640

Excel-Streaming-Reader is an easy-to-use implementation of a streaming Excel reader using Apache POI. Prior to xlsx-streamer 2.1.0, the XML parser that was used did apply all the necessary settings to prevent XML Entity Expansion issues. Upgrade to version 2.1.0 to receive a patch. There is no known workaround.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.013 (68.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Excel_streaming_reader_project Excel_streaming_reader
Monitorjbl Excel-streaming-reader — versions < 2.1.0

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-23640?: CVE-2022-23640 is a critical-severity vulnerability in Excel Streaming Reader Project, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2022-03-02.
How severe is CVE-2022-23640?: Critical severity. CVSS v3 base score is 9.8 out of 10.