CVE-2021-26722
LinkedIn Oncall vulnerable to Cross-Site Scripting
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
CVE-2021-26722- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
CVE-2021-26722- Updated
- 2026-11-02
EUVDEUVD-2021-0159 No score
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
EUVD-2021-0159- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rfw2-x9f8-2f6m
LinkedIn Oncall vulnerable to Cross-Site Scripting
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
GHSA-rfw2-x9f8-2f6m- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
CVE-2021-26722- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-rfw2-x9f8-2f6m
LinkedIn Oncall vulnerable to Cross-Site Scripting
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
GHSA-rfw2-x9f8-2f6m- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVPYSEC-2021-33 No score
LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the "No results found for" message in the search bar.
- Record
PYSEC-2021-33- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
oncallPyPI |
before 1.4.1 | 1.4.1 |
oncallPyPI |
before 1.4.1, plus listed versions 1.1.101.1.21.1.31.1.41.1.5 Show 15 moreShow less1.1.71.1.81.1.91.2.01.2.11.2.21.2.31.2.41.3.41.3.51.3.61.3.71.3.81.3.91.4.0 |
1.4.1 |
oncallPyPI |
before 1.4.1, plus listed versions 1.1.21.1.31.1.41.1.51.1.7 Show 15 moreShow less1.1.81.1.91.1.101.2.01.2.11.2.21.2.31.2.41.3.41.3.51.3.61.3.71.3.81.3.91.4.0 |
1.4.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26722 is a medium vulnerability (CVSS 6.1) in Linkedin Oncall, published February 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.20%, the 88th percentile. Fixed in oncall 1.4.1.
References
github.com/linkedin/oncall/issues/341
nvd.nist.gov/vuln/detail/CVE-2021-26722
pypi.org/project/oncall