How severe is CVE-2017-6370?

CVE-2017-6370 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-2017-6370 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6370?

CVE-2017-6370 affects Typo3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-6370?

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

When was CVE-2017-6370 published?

CVE-2017-6370 was published on 2017-03-17 and last updated on 2026-06-17.

CVE-2017-6370

CVE-2017-6370 is a medium-severity vulnerability in Typo3 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-319.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Typo3
Published: 2017-03-17
Last modified: 2026-06-17

Description

TYPO3 7.6.15 sends an http request to an index.php?loginProvider URI in cases with an https Referer, which allows remote attackers to obtain sensitive cleartext information by sniffing the network and reading the userident and username fields.

Frequently asked questions

What is CVE-2017-6370?: TYPO3 7.6.15 sends an http request to an index.php?loginProvider URI in cases with an https Referer, which allows remote attackers to obtain sensitive cleartext information by sniffing the network and reading the userident and username fields.
How severe is CVE-2017-6370?: CVE-2017-6370 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-2017-6370 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6370?: CVE-2017-6370 affects Typo3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-6370?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-6370 published?: CVE-2017-6370 was published on 2017-03-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:typo3:typo3:7.6.15:*:*:*:*:*:*:*

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