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CVE-2021-41132

Inconsistent input sanitisation leads to XSS vectors

9.8 CriticalFix available

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.04%Up 0.2 points since Oct 15, 2021
90%50%10%1%

What each source reports

CVE List Score used 9.8

Inconsistent input sanitisation leads to XSS vectors

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
CVE-2021-41132
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-116
Updated
2026-11-02
EUVDEUVD-2021-0156 9.8

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
EUVD-2021-0156
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-g67g-hvc3-xmvf 9.3

Inconsistent input sanitisation leads to XSS vectors

Background

A variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of XSS possibilities with specially crafted input to a variety of fields.

Impact

OMERO.web before 5.11.0 and OMERO.figure before 4.4.1.

Patches

Users should upgrade OMERO.web to 5.11.0 or higher and OMERO.figure to 4.4.1 or higher.

Record
GHSA-g67g-hvc3-xmvf
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-79, CWE-116
Updated
2026-11-02
NVD 9.8

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
CVE-2021-41132
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-116, CWE-79
Updated
2026-11-02
OSV 6.1

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
CVE-2021-41132
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVGHSA-g67g-hvc3-xmvf 9.3

Inconsistent input sanitisation leads to XSS vectors

Background

A variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of XSS possibilities with specially crafted input to a variety of fields.

Impact

OMERO.web before 5.11.0 and OMERO.figure before 4.4.1.

Patches

Users should upgrade OMERO.web to 5.11.0 or higher and OMERO.figure to 4.4.1 or higher.

Record
GHSA-g67g-hvc3-xmvf
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-116, CWE-79
Updated
2026-11-02
OSVPYSEC-2021-372 No score

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
PYSEC-2021-372
Updated
2026-11-02
OSVPYSEC-2021-379 No score

OMERO.web provides a web based client and plugin infrastructure. In versions prior to 5.11.0, a variety of templates do not perform proper sanitization through HTML escaping. Due to the lack of sanitization and use of jQuery.html(), there are a whole host of cross-site scripting possibilities with specially crafted input to a variety of fields. This issue is patched in version 5.11.0. There are no known workarounds aside from upgrading.

Record
PYSEC-2021-379
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
omero-web
PyPI
 before 5.11.0
5.11.0
omero-figure
PyPI
 before 4.4.1
4.4.1
omero-web
PyPI
 before 5.11.0, plus listed versions
5.10.05.11.0rc15.5.dev15.5.dev25.6.0
Show 17 moreShow less
5.6.15.6.25.6.35.6.dev15.6.dev25.6.dev35.6.dev45.6.dev55.6.dev65.6.dev75.7.05.7.15.8.05.8.15.9.05.9.15.9.2
5.11.0
omero-figure
PyPI
 before 4.4.1, plus listed versions
2.0.02.0.13.0.03.1.03.1.1
Show 13 moreShow less
3.1.23.2.03.2.14.0.04.0.14.0.24.1.04.2.04.2.dev14.3.04.3.14.3.24.4.0
4.4.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-41132 is a critical vulnerability (CVSS 9.8) in Ome Omero-web, published October 14, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. Fixed in omero-web 5.11.0.

References

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