CVE-2020-26229

lowpriority · track · 15EPSS 0.006 · 51 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.64% (51st) EPSS

CVSS 3.6 · low

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

TYPO3 is an open source PHP based web content management system. In TYPO3 from version 10.4.0, and before version 10.4.10, RSS widgets are susceptible to XML external entity processing. This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions. At least with libxml2 version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed. Update to TYPO3 version 10.4.10 to fix the problem described.

cvss

Technical severity, 0–10. One row per scoring source.

3.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.03.6lowAV:N/AC:H/Au:S/C:P/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 4.9

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:Lprimary · NVD / NIST USexploitability 1.2 · impact 2.5

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:Lsecondary · ENISA EU

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:Lsecondary · security-advisories@github.comexploitability 1.2 · impact 2.5

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:Lsecondary · OSV

v3.13.4lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-611USCWE-611US

affected products (5)

Products and version ranges known to be affected.

TYPO3 TYPO3.CMS10.0.0, → 10.4.10enisa_euvdEU
typo3 typo310.0.0 → 10.4.10nvdUScpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Bitnami typo310.0.0 → 10.4.10osvUSpkg:bitnami/typo3
Packagist typo3/cms10.0.0 → 10.4.10osvUSpkg:composer/typo3/cms
Packagist typo3/cms-core10.0.0 → 10.4.10osvUSpkg:composer/typo3/cms-core

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-q9cp-mc96-m4w2XML External Entity in Dashboard Widget2020-11-23ghsa · osvUS
### Problem It has been discovered that RSS widgets are susceptible to XML external entity processing. This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions. At least with _libxml2_ version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed. ### Solution Update to TYPO3 version 10.4.10 that fixes the problem described.
BIT-typo3-2020-262292024-03-06vendor · osvUS
TYPO3 is an open source PHP based web content management system. In TYPO3 from version 10.4.0, and before version 10.4.10, RSS widgets are susceptible to XML external entity processing. This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions. At least with libxml2 version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed. Update to TYPO3 version 10.4.10 to fix the problem described.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2020-11-23modified 2026-06-17

references (9)

External citations — patches, advisories, analysis.

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