CVE-2020-15842
Liferay Portal and Liferay DXP have Insecure Deserialization Vulnerability
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
CVE-2020-15842- CVSS 3.1
- 8.1 High
CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2020-7823
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
EUVD-2020-7823- CVSS 3.1
- 8.1 High
CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mg3r-9jh8-33r9
Liferay Portal and Liferay DXP have Insecure Deserialization Vulnerability
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
GHSA-mg3r-9jh8-33r9- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
CVE-2020-15842- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
CVE-2020-15842- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-mg3r-9jh8-33r9
Liferay Portal and Liferay DXP have Insecure Deserialization Vulnerability
Liferay Portal before 7.3.0, and Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17, and 7.2 before fix pack 5, allows man-in-the-middle attackers to execute arbitrary code via crafted serialized payloads, because of insecure deserialization.
- Record
GHSA-mg3r-9jh8-33r9- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.liferay.portal:release.portal.bomMaven |
before 7.3.0 | 7.3.0 |
com.liferay.portal:release.dxp.bomMaven |
7.0.0 up to 7.0.10.fp90 | 7.0.10.fp90 |
com.liferay.portal:release.dxp.bomMaven |
7.1.0 up to 7.1.10.fp17 | 7.1.10.fp17 |
com.liferay.portal:release.dxp.bomMaven |
7.2.0 up to 7.2.10.fp5 | 7.2.10.fp5 |
com.liferay.portal:release.portal.bomMaven |
before 7.3.0, plus listed versions 7.0.67.0.6-17.0.6-27.1.07.1.1 Show 6 moreShow less7.1.27.1.37.1.3-17.2.07.2.17.2.1-1 |
7.3.0 |
com.liferay.portal:release.dxp.bomMaven |
7.0.0 up to 7.0.10.fp90, plus listed versions 7.0.10.fp607.0.10.fp617.0.10.fp627.0.10.fp637.0.10.fp64 Show 28 moreShow less7.0.10.fp657.0.10.fp667.0.10.fp677.0.10.fp687.0.10.fp697.0.10.fp707.0.10.fp717.0.10.fp727.0.10.fp737.0.10.fp747.0.10.fp757.0.10.fp767.0.10.fp777.0.10.fp787.0.10.fp797.0.10.fp807.0.10.fp817.0.10.fp827.0.10.fp837.0.10.fp847.0.10.fp857.0.10.fp85-17.0.10.fp867.0.10.fp86-17.0.10.fp877.0.10.fp87-17.0.10.fp887.0.10.fp89 |
7.0.10.fp90 |
com.liferay.portal:release.dxp.bomMaven |
7.1.0 up to 7.1.10.fp17, plus listed versions 7.1.107.1.10.fp17.1.10.fp107.1.10.fp117.1.10.fp12 Show 12 moreShow less7.1.10.fp137.1.10.fp147.1.10.fp157.1.10.fp167.1.10.fp27.1.10.fp37.1.10.fp47.1.10.fp57.1.10.fp67.1.10.fp77.1.10.fp87.1.10.fp9 |
7.1.10.fp17 |
com.liferay.portal:release.dxp.bomMaven |
7.2.0 up to 7.2.10.fp5, plus listed versions 7.2.17.2.107.2.10.fp17.2.10.fp1-17.2.10.fp27.2.10.fp37.2.10.fp4 |
7.2.10.fp5 |
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-2020-15842 is a high vulnerability (CVSS 8.1) in Liferay Portal, published July 20, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.79%, the 78th percentile. Fixed in com.liferay.portal:release.portal.bom 7.3.0.