How severe is CVE-2021-29040?

CVE-2021-29040 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-29040 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29040?

CVE-2021-29040 primarily affects Liferay Digital Experience Platform. In total, 98 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29040?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-29040 published?

CVE-2021-29040 was published on 2021-05-16 and last updated on 2026-07-05.

CVE-2021-29040

CVE-2021-29040 is a medium-severity vulnerability in Liferay Digital Experience Platform with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-209.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-209
Affected product: Liferay Digital Experience Platform
Published: 2021-05-16
Last modified: 2026-07-05

Description

The JSON web services in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 97, 7.1 before fix pack 20 and 7.2 before fix pack 10 may provide overly verbose error messages, which allows remote attackers to use the contents of error messages to help launch another, more focused attacks via crafted inputs.

Frequently asked questions

What is CVE-2021-29040?: The JSON web services in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 97, 7.1 before fix pack 20 and 7.2 before fix pack 10 may provide overly verbose error messages, which allows remote attackers to use the contents of error messages to help launch another, more focused attacks via crafted inputs.
How severe is CVE-2021-29040?: CVE-2021-29040 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-29040 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29040?: CVE-2021-29040 primarily affects Liferay Digital Experience Platform. In total, 98 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29040?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29040 published?: CVE-2021-29040 was published on 2021-05-16 and last updated on 2026-07-05.

References

Affected products (98)

cpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:-:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_13:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_14:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_24:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_25:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_26:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_27:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_28:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_3:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_30:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_33:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_35:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_36:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_39:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_40:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_41:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_42:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_43:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_44:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_45:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_46:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_47:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_48:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_49:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_50:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_51:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_52:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_53:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_54:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_56:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_57:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_58:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_59:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_60:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_61:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_64:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_65:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_66:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_67:*:*:*:*:*:*

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