In Apache Spark before 2.2.0, it is possible for an attacker to take advantage of a user's trust in the server to trick them into visiting a link that points to a shared Spark cluster and submits data including MHTML to the Spark master, or history server. This data, which could contain a script, would then be reflected back to the user and could be evaluated and executed by MS Windows-based clients. It is not an attack on Spark itself, but on the user, who may then execute the script inadvertently when viewing elements of the Spark web UIs.
CVE-2017-7678
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 3.4%, top 12% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity61% × 45%Exploitation3% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 3%
- EPSS %ILE
- 88%
- KEV
- Not listed
Published
July 12, 2017
Last Modified
June 17, 2026
References (4)
- security@apachehttp://apache-spark-developers-list.1001551.n3.nabble.com/CVE-2017-7678-Apache-Spark-XSS-web-UI-MHTML-vulnerability-td21947.html
- security@apachehttp://www.securityfocus.com/bid/99603
- af854a3a-2127-422b-91ae-364da2661108http://apache-spark-developers-list.1001551.n3.nabble.com/CVE-2017-7678-Apache-Spark-XSS-web-UI-MHTML-vulnerability-td21947.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99603
Affected Packages
(2 across 1 ecosystem)
Maven(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.apache.spark:spark-core_2.10 | 0.9.0-incubating ... 2.1.3 (30 versions) | 2.2.0 | — |
| org.apache.spark:spark-core_2.11 | 1.2.0 ... 2.1.3 (22 versions) | 2.2.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 22× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 172 total refreshes for this CVE.
- 2026-09-24 13:59 UTCEPSS rescore
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Related CVEs(same product + same CWE)
Same product
9 shownMaven:org.apache.spark:spark-core_2.10 · Maven:org.apache.spark:spark-core_2.11
Frequently asked(5)
What is CVE-2017-7678?
When was CVE-2017-7678 disclosed?
Is CVE-2017-7678 actively exploited?
What is the CVSS score of CVE-2017-7678?
How do I remediate CVE-2017-7678?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-7678
Is Your Infrastructure Affected by CVE-2017-7678?
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