PoC Index

CVE-2020-7776

HIGH 7.1EPSS 1.3%

This affects the package phpoffice/phpspreadsheet from 0.0.0. The library is vulnerable to XSS when creating an html output from an excel file by adding a comment on any cell. The root cause of this issue is within the HTML writer where user comments are concatenated as part of link and this is returned as HTML. A fix for this issue is available on commit 0ed5b800be2136bcb8fa9c1bdf59abc957a98845/master branch.

CVSS v3.1
6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v3.1
7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS v3.1
6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v2.0
3.5 LOWAV:N/AC:M/Au:S/C:N/I:P/A:N
EPSS
1.30% chance of exploitation in the next 30 days, 68th percentile
Published
2020-12-09
Updated
2024-09-16

Proof-of-concept exploits (1)

References

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