Security Bulletin: MongoDB Enterprised Advanced affected by: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') (CVE-2026-40477, CVE-2026-40478)

Summary There are vulnerabilities in thymeleaf-3.1.2.RELEASE.jar used in MongoDB Enterprised Advanced for IBM, involving CVE-2026-40477, CVE-2026-40478. The vulnerabilities have been addressed. Vulnerability Details CVEID:CVE-2026-40477 DESCRIPTION: Thymeleaf is a server-side Java template engine...

CVE-2026-40477

creationtimestamp| type| source ---|---|--- 2026-04-17 23:20:20+00:00| published-proof-of-concept| Telegram/pKVsSWpOH4ztPjCePA6f2TZasDjFWE2MPBTfIhx3aN4UBbI 2026-04-17 23:21:32+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3mjq2uskvyj2d...

CVE-2026-40477

Thymeleaf is a server-side Java template engine for web and standalone environments. Versions 3.1.3.RELEASE and prior contain a security bypass vulnerability in the expression execution mechanisms. Although the library provides mechanisms to prevent expression injection, it fails to properly...

ai.hyacinth.framework:core-service-admin-server (>=0.5.0, <=0.5.24), au.org.consumerdatastandards:client-cli (>=1.1.1, <=2.4.1) +1482 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf-spring5 (>=3.0.9.release, <=3.1.3.release)

org.thymeleaf:thymeleaf-spring5 MAVEN version =3.0.9.release, =0.5.0, =1.1.1, =3.4.0, =5.6.5, =4.1.0, =4.1.0, =3.7.0, =3.7.0, =5.3.0, =6.2.0, =5.1.0, =6.8.0, =6.4.0, =5.3.0, =3.7.0, =5.5.7 and more Source cves: CVE-2026-40477 Source advisory: MEND:CVE-2026-40477...

org.thymeleaf:thymeleaf-spring3 (1.1.2) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (1.1.2)

org.thymeleaf:thymeleaf MAVEN version 1.1.2 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 1.1.2 Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

ai.aletyx.kogito:aletyx-kogito-addons-springboot-dev-console (10.2.0), ai.hyacinth.framework:core-service-admin-server (>=0.5.0, <=0.5.24) +3048 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (>=3.0.0.alpha01, <=3.1.3.release)

org.thymeleaf:thymeleaf MAVEN version =3.0.0.alpha01, =0.5.0, =0.9.6, =0.9.6, =1.0.0, =0.0.1, =1.0.0, =1.0, =3.4.0, =5.6.5, =4.1.0, =4.1.0, =3.6.0, =5.2.1 and more Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

org.thymeleaf:thymeleaf-spring3 (1.0.0-beta2) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (1.0.0-beta2)

org.thymeleaf:thymeleaf MAVEN version 1.0.0-beta2 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 1.0.0-beta2 Source cves: CVE-2026-40477 Source advisory:...

org.thymeleaf:thymeleaf-spring3 (1.0.0-beta3) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (1.0.0-beta3)

org.thymeleaf:thymeleaf MAVEN version 1.0.0-beta3 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 1.0.0-beta3 Source cves: CVE-2026-40477 Source advisory:...

org.thymeleaf:thymeleaf-spring3 (m1) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (m1)

org.thymeleaf:thymeleaf MAVEN version m1 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 m1 Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

net.sourceforge.pagesdialect:pagesdialect-core (1.0.0-beta2), org.thymeleaf:thymeleaf-spring3 (2.0.6) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.0.6)

org.thymeleaf:thymeleaf MAVEN version 2.0.6 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - net.sourceforge.pagesdialect:pagesdialect-core 1.0.0-beta2 - org.thymeleaf:thymeleaf-spring3 2.0.6 Source cves:...

com.github.dandelion:datatables-thymeleaf (>=0.9.0, <=0.9.2), nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect (>=1.1, <=1.1.3) +10 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.0.17)

org.thymeleaf:thymeleaf MAVEN version 2.0.17 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - com.github.dandelion:datatables-thymeleaf =0.9.0, =1.1, =3.0.0-ga, =3.0.0-ga, =3.0.0-ga, =3.0.0-ga, =3.0.0-ga,...

ai.aletyx.kogito:aletyx-kogito-addons-springboot-dev-console (10.2.0), best.skn:skn-spring-mail (>=1.0.0, <=2.4.0) +769 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf-spring6 (>=3.1.0.m1, <=3.1.3.release)

org.thymeleaf:thymeleaf-spring6 MAVEN version =3.1.0.m1, =1.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.6.0, =7.6.0, =7.0.0, =8.8.2 and more Source cves: CVE-2026-40477 Source advisory: GHSA-R4V4-5MWR-2FWR...

ai.aletyx.kogito:aletyx-kogito-addons-springboot-dev-console (10.2.0), best.skn:skn-spring-mail (>=1.0.0, <=2.4.0) +769 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf-spring6 (>=3.1.0.m1, <=3.1.3.release)

org.thymeleaf:thymeleaf-spring6 MAVEN version =3.1.0.m1, =1.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.6.0, =7.6.0, =7.0.0, =8.8.2 and more Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

org.thymeleaf:thymeleaf-spring3 (1.1.1) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (1.1.1)

org.thymeleaf:thymeleaf MAVEN version 1.1.1 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 1.1.1 Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

org.thymeleaf:thymeleaf-spring3 (1.1.3) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (1.1.3)

org.thymeleaf:thymeleaf MAVEN version 1.1.3 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 1.1.3 Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

net.sourceforge.html5valdialect:html5valdialect (>=1.0.0-beta1, <=1.0.0-beta3), net.sourceforge.pagesdialect:pagesdialect-core (1.0.0-beta4) +13 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.0.13)

org.thymeleaf:thymeleaf MAVEN version 2.0.13 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - net.sourceforge.html5valdialect:html5valdialect =1.0.0-beta1, =2.0.0-ga, =2.0.0-ga, =2.0.0-ga, =2.0.0-ga,...

org.broadleafcommerce:broadleaf-common (>=3.0.11-ga, <=3.0.16-ga), org.broadleafcommerce:broadleaf-contentmanagement-module (>=3.0.11-ga, <=3.0.16-ga) +8 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.0.20)

org.thymeleaf:thymeleaf MAVEN version 2.0.20 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.broadleafcommerce:broadleaf-common =3.0.11-ga, =3.0.11-ga, =3.0.11-ga, =3.0.11-ga, =3.0.11-ga, =2.0.8, =2.0....

org.thymeleaf:thymeleaf-spring3 (2.1.0-m1) potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.1.0-m1)

org.thymeleaf:thymeleaf MAVEN version 2.1.0-m1 is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - org.thymeleaf:thymeleaf-spring3 2.1.0-m1 Source cves: CVE-2026-40477 Source advisory: OSV:GHSA-R4V4-5MWR-2FWR...

ca.uhn.hapi.fhir:hapi-fhir-osgi-core (>=1.4, <=1.6), ca.uhn.hapi.fhir:hapi-fhir-testpage-overlay (>=0.9, <=1.6) +242 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.1.4.release)

org.thymeleaf:thymeleaf MAVEN version 2.1.4.release is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - ca.uhn.hapi.fhir:hapi-fhir-osgi-core =1.4, =0.9, =1.4, =0.0.10, =4.0.0, =1.0.5, =1.0.0, =1.0.0.release,...

cc.catalysts.boot:cat-boot-thymeleaf (>=1.1.2, <=1.1.7), cc.catalysts.boot:cat-boot-thymeleaf2 (>=1.1.2, <=1.1.7) +63 more potentially affected by CVE-2026-40477 via org.thymeleaf:thymeleaf (2.1.6.release)

org.thymeleaf:thymeleaf MAVEN version 2.1.6.release is affected by a known vulnerability. The following packages have a transitive dependency on org.thymeleaf:thymeleaf and may be impacted: - cc.catalysts.boot:cat-boot-thymeleaf =1.1.2, =1.1.2, =0.1.0, =4.0.4, =4.0.3, =4.0.3, =4.0.3, =4.0.3,...