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CVE-2020-7932

OMERO-web Sensitive Data Exposure

5.7 MediumFix available

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.80%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.7

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
CVE-2020-7932
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0
3.5 LowAV:N/AC:M/Au:S/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
CVE-2020-7932
Updated
2026-11-02
EUVDEUVD-2020-0120 No score

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
EUVD-2020-0120
Updated
2026-11-03
GitHub AdvisoriesGHSA-vwxv-frj6-fhc9 6.9

OMERO-web Sensitive Data Exposure

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
GHSA-vwxv-frj6-fhc9
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSVGHSA-vwxv-frj6-fhc9 6.9

OMERO-web Sensitive Data Exposure

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
GHSA-vwxv-frj6-fhc9
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSVPYSEC-2020-244 No score

OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to be passed as URL query parameters. If an attacker tricks a user into clicking a malicious link in OMERO.web, the information in the query parameters may be exposed in the Referer header seen by the target. Information in the URL path such as object IDs may also be exposed.

Record
PYSEC-2020-244
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
omero-web
PyPI
before 5.6.3
5.6.3
omero-web
PyPI
before 5.6.3, plus listed versions
5.5.dev15.5.dev25.6.05.6.15.6.2
Show 7 moreShow less
5.6.dev15.6.dev25.6.dev35.6.dev45.6.dev55.6.dev65.6.dev7
5.6.3

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-2020-7932 is a medium vulnerability (CVSS 5.7) in Openmicroscopy Omero.web, published June 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 56th percentile. Fixed in omero-web 5.6.3.

References

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