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CVE-2026-40087

Medium

Advisory

Published 8 Apr 2026In the index since 6 Sept 2026

Severity: Medium; worst across findings
CVSS: 5.3; base score, highest
EPSS: 0.003; 18th percentile
CISA KEV: Not listed; no confirmed exploitation
Charts affected: 20; of 17,781 indexed, latest versions
Container images: 18; deployed by those charts
Fix available: 1 of 1; affected package

LangChain has incomplete f-string validation in prompt templates

Carried by container images the latest versions of 20 of 17,781 indexed charts deploy, on 18 images.

Affected package	Affected versions	Fixed in	Images
langchain-corepypi	0.1.23, 0.1.52, 0.2.22, 0.3.1+8 more	0.3.84, 1.2.28	18

OSV records: GHSA-926x-3r5x-gfhw
Also known as: PYSEC-2026-2563

Charts affected

20 by stars

Chart

Latest

Affected images

Radar Score

convertigoconvertigo

1 of 5 See more

convertigo convertigo 8.4.3

1 of the 5 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
baserow/baserow :1.30.1	df0c42eb67e8	langchain-core@0.1.52	0.3.84

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17,404

cosmotech-copilot-apicosmotech-api

1 of 1 See more

cosmotech-copilot-api cosmotech-api 0.1.1

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ghcr.io/cosmo-tech/cosmotech-copilot-api :latest	a2be95de450c	langchain-core@0.1.23	0.3.84

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11,205

streamlit-appstreamlit-app

1 of 1 See more

streamlit-app streamlit-app 0.2.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
sruthitanneru/pi-sample :ui-latest	e565ea454ffd	langchain-core@0.3.21	0.3.84

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1,696

tocktock

1 of 9 See more

tock tock 0.6.3

1 of the 9 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
tock/gen-ai-orchestrator-server :25.10.7	abf7880e0449	langchain-core@0.3.83	0.3.84

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12,907

baserowblackbird-cloud

1 of 6 See more

baserow blackbird-cloud 1.0.17

1 of the 6 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
baserow/backend :1.31.1	e0b3c8130b91	langchain-core@0.1.52	0.3.84

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10,145

chat-searchchat-search

1 of 1 See more

chat-search chat-search 0.1.7

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ghcr.io/hemslo/chat-search :latest	39d48995a5bd	langchain-core@0.2.22	0.3.84

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4,042

csghubcsghub

1 of 34 See more

csghub csghub 2.4.3

1 of the 34 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opencsghq/agenticflow :ee-v0.6-5	2f03fead54db	langchain-core@0.3.72	0.3.84

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58,897

ilum-streamlitilum

1 of 1 See more

ilum-streamlit ilum 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ilum/streamlit-example :1.0.0	ce5dcdeb22ba	langchain-core@1.1.0	1.2.28

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2,736

guardrails-usvcinfracloud-charts

1 of 1 See more

guardrails-usvc infracloud-charts 1.0.1

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/guardrails-tgi :latest	f68bec6a1271	langchain-core@0.3.29	0.3.84

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5,062

aperagkubeblocks

1 of 3 See more

aperag kubeblocks 0.0.0-nightly

1 of the 3 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
apecloud/aperag :v0.0.0-nightly	8ac9947a2c84	langchain-core@0.3.54	0.3.84

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8,405

octantisoctantis

1 of 1 See more

octantis octantis 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ghcr.io/vinny1892/octantis :latest	45459c0910fc	langchain-core@1.2.20	1.2.28

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2,555

chatbot-ai-sampleopenshift

1 of 4 See more

chatbot-ai-sample openshift 0.1.6

1 of the 4 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
quay.io/redhat-ai-dev/chatbot :latest	59fe607dfdf2	langchain-core@0.1.52	0.3.84

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18,922

1 of 1 See more

agentdata rss3 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ghcr.io/rss3-network/agentdata :0.1.0	fd8d3e6e4cdf	langchain-core@0.3.43	0.3.84

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3,512

noderss3

1 of 3 See more

node rss3 0.7.2

1 of the 3 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
ghcr.io/rss3-network/agentdata :0.1.0	fd8d3e6e4cdf	langchain-core@0.3.43	0.3.84

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4,718

chatqnatest-opea

2 of 11 See more

chatqna test-opea 1.0.0

2 of the 11 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/embedding-tei :1.0	5c9639de61c1	langchain-core@0.3.1	0.3.84
opea/retriever-redis :1.0	eb746b263705	langchain-core@0.3.1	0.3.84

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39,090

docsumtest-opea

1 of 5 See more

docsum test-opea 1.0.0

1 of the 5 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/llm-docsum-tgi :1.0	02f9e8fa5d71	langchain-core@0.3.1	0.3.84

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28,858

embedding-usvctest-opea

1 of 1 See more

embedding-usvc test-opea 1.0.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/embedding-tei :1.0	5c9639de61c1	langchain-core@0.3.1	0.3.84

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5,185

guardrails-usvctest-opea

1 of 1 See more

guardrails-usvc test-opea 1.0.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/guardrails-tgi :1.0	262c6048aab8	langchain-core@0.3.1	0.3.84

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5,221

retriever-usvctest-opea

1 of 1 See more

retriever-usvc test-opea 1.0.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/retriever-redis :1.0	eb746b263705	langchain-core@0.3.1	0.3.84

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5,198

web-retrievertest-opea

1 of 1 See more

web-retriever test-opea 1.0.0

1 of the 1 container images this version deploys carry CVE-2026-40087.

Container image	Digest	Package	Fixed in
opea/web-retriever-chroma :1.0	fe08165d7770	langchain-core@0.3.1	0.3.84

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5,350

Container images carrying it

18 by charts deploying them

A fixed version is listed for 1 of the 1 affected package.

Container image	Digest	Package	Fixed in	Used by
opea/embedding-tei :1.0	5c9639de61c1	langchain-core@0.3.1	0.3.84	2
opea/retriever-redis :1.0	eb746b263705	langchain-core@0.3.1	0.3.84	2
ghcr.io/rss3-network/agentdata :0.1.0	fd8d3e6e4cdf	langchain-core@0.3.43	0.3.84	2
apecloud/aperag :v0.0.0-nightly	8ac9947a2c84	langchain-core@0.3.54	0.3.84	1
baserow/backend :1.31.1	e0b3c8130b91	langchain-core@0.1.52	0.3.84	1
baserow/baserow :1.30.1	df0c42eb67e8	langchain-core@0.1.52	0.3.84	1
ilum/streamlit-example :1.0.0	ce5dcdeb22ba	langchain-core@1.1.0	1.2.28	1
opea/guardrails-tgi :1.0	262c6048aab8	langchain-core@0.3.1	0.3.84	1
opea/guardrails-tgi :latest	f68bec6a1271	langchain-core@0.3.29	0.3.84	1
opea/llm-docsum-tgi :1.0	02f9e8fa5d71	langchain-core@0.3.1	0.3.84	1
opea/web-retriever-chroma :1.0	fe08165d7770	langchain-core@0.3.1	0.3.84	1
opencsghq/agenticflow :ee-v0.6-5	2f03fead54db	langchain-core@0.3.72	0.3.84	1
sruthitanneru/pi-sample :ui-latest	e565ea454ffd	langchain-core@0.3.21	0.3.84	1
tock/gen-ai-orchestrator-server :25.10.7	abf7880e0449	langchain-core@0.3.83	0.3.84	1
ghcr.io/cosmo-tech/cosmotech-copilot-api :latest	a2be95de450c	langchain-core@0.1.23	0.3.84	1
ghcr.io/hemslo/chat-search :latest	39d48995a5bd	langchain-core@0.2.22	0.3.84	1
ghcr.io/vinny1892/octantis :latest	45459c0910fc	langchain-core@1.2.20	1.2.28	1
quay.io/redhat-ai-dev/chatbot :latest	59fe607dfdf2	langchain-core@0.1.52	0.3.84	1