How severe is CVE-2025-6211?

CVE-2025-6211 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2025-6211 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6211?

CVE-2025-6211 affects Llamaindex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6211?

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

Does CVE-2025-6211 have an EU (EUVD) identifier?

Yes. CVE-2025-6211 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20993.

When was CVE-2025-6211 published?

CVE-2025-6211 was published on 2025-07-10 and last updated on 2026-06-17.

CVE-2025-6211

CVE-2025-6211 is a medium-severity vulnerability in Llamaindex with a CVSS 3.x base score of 6.5. 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-440.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20993
Weakness: CWE-440
Affected product: Llamaindex
Published: 2025-07-10
Last modified: 2026-06-17

Description

A vulnerability in the DocugamiReader class of the run-llama/llama_index repository, up to version 0.12.28, involves the use of MD5 hashing to generate IDs for document chunks. This approach leads to hash collisions when structurally distinct chunks contain identical text, resulting in one chunk overwriting another. This can cause loss of semantically or legally important document content, breakage of parent-child chunk hierarchies, and inaccurate or hallucinated responses in AI outputs. The issue is resolved in version 0.3.1.

Frequently asked questions

What is CVE-2025-6211?: A vulnerability in the DocugamiReader class of the run-llama/llama_index repository, up to version 0.12.28, involves the use of MD5 hashing to generate IDs for document chunks. This approach leads to hash collisions when structurally distinct chunks contain identical text, resulting in one chunk overwriting another. This can cause loss of semantically or legally important document content, breakage of parent-child chunk hierarchies, and inaccurate or hallucinated responses in AI outputs. The issue is resolved in version 0.3.1.
How severe is CVE-2025-6211?: CVE-2025-6211 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2025-6211 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6211?: CVE-2025-6211 affects Llamaindex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6211?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6211 have an EU (EUVD) identifier?: Yes. CVE-2025-6211 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20993.
When was CVE-2025-6211 published?: CVE-2025-6211 was published on 2025-07-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:llamaindex:llamaindex:*:*:*:*:*:*:*:*

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